4x^2-12x+9=289

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Solution for 4x^2-12x+9=289 equation:


Simplifying
4x2 + -12x + 9 = 289

Reorder the terms:
9 + -12x + 4x2 = 289

Solving
9 + -12x + 4x2 = 289

Solving for variable 'x'.

Reorder the terms:
9 + -289 + -12x + 4x2 = 289 + -289

Combine like terms: 9 + -289 = -280
-280 + -12x + 4x2 = 289 + -289

Combine like terms: 289 + -289 = 0
-280 + -12x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-70 + -3x + x2) = 0

Factor a trinomial.
4((-7 + -1x)(10 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Solution

x = {-7, 10}

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