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What is x if x squared plus x equals 56?
7 or -8 72+7 = 56 (-8)2+(-8) = 56 You can solve this using some simple algebra. Let x be the number you are looking for. x2 +x-56-0 This can be factored as: (x-7)(x+8)=0 Now use the zero property that says if AB=0, A=0 or B=0 (or both) So x-7=0 and x=7 or x+8=0 and x=-8
What is x to the 2nd power minus x minus 56?
x^(2) - x - 56 is a Quadratic EXPRESSION. This can be factored to ( x + 7)(x - 8) To find the values of 'x' , it needs to be equated to 'zero' Hence it is Quadratic EQUATION x^(2) - x - 56 = 0 ( x + 7)(x - 8) = 0 x + 7 = 0 x = -7 & / or x - 8 = 0 x = 8
What is 807 in expanded form?
(8 x 100) + (0 x 10) + (7 x 1)Eight hundred and seven
How do you write 57480000 in expanded form?
57,480,000 = (5 x 10000000) + (7 x 1000000) + (4 x 100000) + (8 x 10000) + (0 x 1000) + (0 x 100) + (0 x 10) + (0 x 1) OR(5 x 10^7) + (7 x 10^6) + (4 x 10^5) + (8 x 10^4) + (0 x 10^3) + (0 x 10^2) + (0 x 10^1) + (0 x 10^0)
How do you plot x plus y equals 9 x-y equals 7?
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What is x if x squared plus x equals 56?
7 or -8 72+7 = 56 (-8)2+(-8) = 56 You can solve this using some simple algebra. Let x be the number you are looking for. x2 +x-56-0 This can be factored as: (x-7)(x+8)=0 Now use the zero property that says if AB=0, A=0 or B=0 (or both) So x-7=0 and x=7 or x+8=0 and x=-8
What is x to the 2nd power minus x minus 56?
x^(2) - x - 56 is a Quadratic EXPRESSION. This can be factored to ( x + 7)(x - 8) To find the values of 'x' , it needs to be equated to 'zero' Hence it is Quadratic EQUATION x^(2) - x - 56 = 0 ( x + 7)(x - 8) = 0 x + 7 = 0 x = -7 & / or x - 8 = 0 x = 8
How many 7 digit numbers can be formed using digits 0 to 7 when 0 is never first?
If digits can't be repeated, then there are (7 x 7 x 6 x 5 x 4 x 3 x 2) = 35,280If digits can be repeated, then there are (7 x 8 x 8 x 8 x 8 x 8 x 8) = 1,835,008
The sum of two integers is -8 and their product is plus 7 what are the two integers?
short answer -1 and -7 long worked answer let x = one of the integers let y = the other integer x+y = -8 xy = 7 solve for y y = -8 - x plug y in x(-8 - x) = 7 rearrange -x^2 - 8x - 7 = 0 divide both sides by -1 x^2 + 8x + 7 = 0 factor (x + 7)(x + 1) = 0 x = -1, -7 y = -8 - x so y = -8 + 1 = -7 or -8 + 7 = -1 so when x = -1, y = -7 when x = -7, y = -1
How do you write 200000700 in expand form using exponents?
(2 x 10^8) + (0 x 10^7) + (0 x 10^6) + (0 x 10^5) + (0 x 10^4) + (0 x 10^3) + (7 x 10^2) + (0 x 10^1) + (0 x 10^0)
How do you write 78000 in expanded notation?
Expanded Exponential Notation of 78,000 = (7 x 104) + (8 x 103) + (0 x 102) + (0 x 101) + (0 x 100).Expanded Notation of 78,000 = (7 x 10000) + (8 x 1000) + (0 x 100) + (0 x 10) + (0 x 1).
What is 807 in expanded form?
(8 x 100) + (0 x 10) + (7 x 1)Eight hundred and seven
How do you write18807827as an expanded number?
With exponents: 18,807,827 = (1 x 107) + (8 x 106) + (8 x 105) + (0 x 104) + (7 x 103) + (8 x 102) + (2 x 101) + (7 x 100)Without exponents: (1 x 10000000) + (8 x 1000000) + (8 x 100000) + (0 x 10000) + (7 x 1000) + (8 x 100) + (2 x 10) + (7 x 1)
How do you write 57480000 in expanded form?
57,480,000 = (5 x 10000000) + (7 x 1000000) + (4 x 100000) + (8 x 10000) + (0 x 1000) + (0 x 100) + (0 x 10) + (0 x 1) OR(5 x 10^7) + (7 x 10^6) + (4 x 10^5) + (8 x 10^4) + (0 x 10^3) + (0 x 10^2) + (0 x 10^1) + (0 x 10^0)
What are the points of intersection of the following parabolas y equals x2 -7x plus 8 and y equals -x2 plus 9x -6?
y = x2 - 7x + 8 y = -x2 + 9x - 6 subtract the 2nd from the 1st equation 0 = 2x2 - 16x + 14 simplify 0 = x2 - 8x + 7 factor it, since 7 = (-1)(-7) and -1 - 7 = -8 0 = (x - 1)(x - 7) let each factor equal to zero x - 1 = 0 or x - 7 = 0 solve for x thus, x = 1 and x = 7. Chose one of the equation and substitute x with 1, and 7 to find the corresponding y-values. y = x2 - 7x + 8 y = (1)2 - 7(1) + 8 = 1 - 7 + 8 = 2; (1, 2) intersection point y = (7)2 - 7(7) + 8 = 49 - 49 + 8 = 8; (7, 8) intersection point
Where are the points of contact when the equations of y equals 8 over x and y equals 7 plus x meet with each other?
If: y = 8/x and y = 7+x Then: 8/x = 7+x Multiply all terms by x: 8 = 7x+x^2 or x^2 +7x -8 = 0 Factorizing the above: (x-1)(x+8) = 0 => x =1 or x = -8 Through substitution contacts are made at: (-8, -1) and (1, 8)
What is the expanded form for 408377?
Expanded Notation of 408,377 = (4 x 105) + (0 x 104) + (8 x 103) + (3 x 102) + (7 x 101) + (7 x 100) OR (4 x 100000) + (0 x 10000) + (8 x 1000) + (3 x 100) + (7 x 10) + (7 x 1).
