25=x^2+8x+16

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Solution for 25=x^2+8x+16 equation:


Simplifying
25 = x2 + 8x + 16

Reorder the terms:
25 = 16 + 8x + x2

Solving
25 = 16 + 8x + x2

Solving for variable 'x'.

Combine like terms: 25 + -16 = 9
9 + -8x + -1x2 = 16 + 8x + x2 + -16 + -8x + -1x2

Reorder the terms:
9 + -8x + -1x2 = 16 + -16 + 8x + -8x + x2 + -1x2

Combine like terms: 16 + -16 = 0
9 + -8x + -1x2 = 0 + 8x + -8x + x2 + -1x2
9 + -8x + -1x2 = 8x + -8x + x2 + -1x2

Combine like terms: 8x + -8x = 0
9 + -8x + -1x2 = 0 + x2 + -1x2
9 + -8x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
9 + -8x + -1x2 = 0

Factor a trinomial.
(1 + -1x)(9 + x) = 0

Subproblem 1

Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1

Subproblem 2

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Solution

x = {1, -9}

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