We will do this in steps. -4 x -2 = 8. -7 x 7 = -49. 8 + (-49) = -41.
0
Find factors of 16 which add to 8: Factors of 16 are 1 & 16, 2 & 7 and 4 & 4: Only the last add to 8 so: (x + 4)(x + 4) or (x + 4)2
11
x - 2 = 7 so x - 2 = 7 then convert that into an addition problem: 7 + 2 = x then add: 7 + 2 = 9 therefore x = 9
2X^2 + 5X - 10 = X^2 + 4 subtract the X^2 and 4 from each side X^2 + 5X - 14 = 0 what two factors of 14 add up to 5 ? (X - 2)(X + 7) X = 2 X = - 7
Add 5 and 2 to make 7. x/7 = 4 Mulitply by 7. x = 28.
2 x 2 = 4 2 x 7 = 14 2 x 2 x 7 = 28, the LCM
add 7, 11, 13, and 23 together multiply 2 x 2 x 2 x 7
Start with the equation equaling 7; 3/4(X + 5) - 2 = 7 X + 5 = 4/3(7 + 2) = 4/3 x 9 = 12 X = 12 - 5 = 7
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Find factors of 16 which add to 8: Factors of 16 are 1 & 16, 2 & 7 and 4 & 4: Only the last add to 8 so: (x + 4)(x + 4) or (x + 4)2
11
11
x - 2 = 7 so x - 2 = 7 then convert that into an addition problem: 7 + 2 = x then add: 7 + 2 = 9 therefore x = 9
2X^2 + 5X - 10 = X^2 + 4 subtract the X^2 and 4 from each side X^2 + 5X - 14 = 0 what two factors of 14 add up to 5 ? (X - 2)(X + 7) X = 2 X = - 7
You add them normally but make sure the answer is negative for those negative numbers are only being ADDED not MULTIPLIED. When you multiply 2 negative numbers, the answer becomes positive. -2 + -2 = -4 -2 x -2 = 4 -5 + -7 = -12 -5 x -7 = 35
The factor pairs of 148 are (148, 1) (74, 2) (37, 4) None of them add up to -13