(8-x)(x+7)=52-x^2

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Solution for (8-x)(x+7)=52-x^2 equation:


Simplifying
(8 + -1x)(x + 7) = 52 + -1x2

Reorder the terms:
(8 + -1x)(7 + x) = 52 + -1x2

Multiply (8 + -1x) * (7 + x)
(8(7 + x) + -1x * (7 + x)) = 52 + -1x2
((7 * 8 + x * 8) + -1x * (7 + x)) = 52 + -1x2
((56 + 8x) + -1x * (7 + x)) = 52 + -1x2
(56 + 8x + (7 * -1x + x * -1x)) = 52 + -1x2
(56 + 8x + (-7x + -1x2)) = 52 + -1x2

Combine like terms: 8x + -7x = 1x
(56 + 1x + -1x2) = 52 + -1x2

Add 'x2' to each side of the equation.
56 + 1x + -1x2 + x2 = 52 + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
56 + 1x + 0 = 52 + -1x2 + x2
56 + 1x = 52 + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
56 + 1x = 52 + 0
56 + 1x = 52

Solving
56 + 1x = 52

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-56' to each side of the equation.
56 + -56 + 1x = 52 + -56

Combine like terms: 56 + -56 = 0
0 + 1x = 52 + -56
1x = 52 + -56

Combine like terms: 52 + -56 = -4
1x = -4

Divide each side by '1'.
x = -4

Simplifying
x = -4

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