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The way to do this is get an expression equal to zero, then solve (in this case it's a quadratic), so either factor or use the quadratic equation. x2 + x - 56 = 0: Factors into: (x - 7)(x + 8) = 0, x = 7 & x = -8
To factor, find two numbers which when added equal 1 (the coefficient of the x term) and when multiplied equal -56. So one of the numbers must be positive and the other negative. Factor pairs of 56 are (1,56) (2,28) (4,14) and (7,8). Seven & eight are one apart, so if the seven is negative, they will add to equal 1. If either of the binomial factors is zero, then the result is zero, so for (x-7)=0, {x=7} solves it, and for (x+8)=0, {x=-8} solves it. Check your answers in the original equation, to make sure you did it correctly:
7^2 + 7 = 49 + 7 = 56 (check) (-8)^2 + -8 = 64 - 8 = 56 (check) STANLY WAS HERE
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∙ 13y ago
Anonymous
(X +7) X-8)
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What is the center of a circle for the equation 3x2 plus 3y2 - 30x plus 27 equals 0?
56
To solve 7x equals 56 you must do what to both sides?
7x = 56 To find the solution for x, you should divide both sides of the equation by 7 to get x = 8.
What is 2 squared times 3 cubed?
72 minus the root of squared minus equals 72 but you have to be smart to know that the minimum circumference s 56 there you go
What is 4x14 equals?
56
What is the value of x in the equation 5x plus 3 -7 divided by 2 equals 56?
If the equation is (5x + 3 - 7) / 2 = 56, than x = 23.2
Solve a2 plus 30a plus 56 equals 0?
a2+30a+56=0 , solve for a Using the quadratic formula, you will find that: a=-2 , a=-28
The sum of a number and its square is 56?
The answer is 7. Seven squared is forty nine. 49 plus 7 equals 56.
What is 28 plus z equals 56?
Set up the equation and solve for z: 28 + z = 56 (next, subtract 28 from each side of the equaition to solve) z = 28
If A squared plus B squared equals C squared and C equals 70 what is A and B?
The solution follows A=42 42X42=1764 B=56 56X56=3136 sum of above=4900 (70X70=4900) Given you was looking for C and not C squared. Try A and B and doublecheck it for me.
56 plus 56 equals?
112
What equals 56?
56 plus zero
What is 8-6 squared - 28?
First you must square the 6 which the answer is 36. Then you subtract 36 from 8 and the answer is negative 28. Finally you solve negative 28 minus 28 (-28-28) which equals negative 56 (-56).
How do you solve x-56 equals 79?
x - 56 = 79 x - 56 + 56 = 79 + 56 x = 135
What is is 56 plus 1?
56 plus 1 equals 57. == ==
What is 1 plus 2 plus 56 equals?
1 + 2 + 56 = 59
What is the area of the region x plus y squared equals 56 when x plus y equals 0?
If by area you mean X*Y it would be -49 (or 49, if you assume area to be positive). (X=7, Y=-7) when X+Y^2=56 and X+Y=0.
How do you solve 10x equals 3x plus 56?
First, subtract 3x from each side of the equation. Then, divide each side of the equation by 7 .
