72(x^2-1)=17x

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Solution for 72(x^2-1)=17x equation:


Simplifying
72(x2 + -1) = 17x

Reorder the terms:
72(-1 + x2) = 17x
(-1 * 72 + x2 * 72) = 17x
(-72 + 72x2) = 17x

Solving
-72 + 72x2 = 17x

Solving for variable 'x'.

Reorder the terms:
-72 + -17x + 72x2 = 17x + -17x

Combine like terms: 17x + -17x = 0
-72 + -17x + 72x2 = 0

Factor a trinomial.
(-8 + -9x)(9 + -8x) = 0

Subproblem 1

Set the factor '(-8 + -9x)' equal to zero and attempt to solve: Simplifying -8 + -9x = 0 Solving -8 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -9x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -9x = 0 + 8 -9x = 0 + 8 Combine like terms: 0 + 8 = 8 -9x = 8 Divide each side by '-9'. x = -0.8888888889 Simplifying x = -0.8888888889

Subproblem 2

Set the factor '(9 + -8x)' equal to zero and attempt to solve: Simplifying 9 + -8x = 0 Solving 9 + -8x = 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 + -8x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -8x = 0 + -9 -8x = 0 + -9 Combine like terms: 0 + -9 = -9 -8x = -9 Divide each side by '-8'. x = 1.125 Simplifying x = 1.125

Solution

x = {-0.8888888889, 1.125}

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