7x^2=90x+112

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Solution for 7x^2=90x+112 equation:


Simplifying
7x2 = 90x + 112

Reorder the terms:
7x2 = 112 + 90x

Solving
7x2 = 112 + 90x

Solving for variable 'x'.

Reorder the terms:
-112 + -90x + 7x2 = 112 + 90x + -112 + -90x

Reorder the terms:
-112 + -90x + 7x2 = 112 + -112 + 90x + -90x

Combine like terms: 112 + -112 = 0
-112 + -90x + 7x2 = 0 + 90x + -90x
-112 + -90x + 7x2 = 90x + -90x

Combine like terms: 90x + -90x = 0
-112 + -90x + 7x2 = 0

Factor a trinomial.
(-8 + -7x)(14 + -1x) = 0

Subproblem 1

Set the factor '(-8 + -7x)' equal to zero and attempt to solve: Simplifying -8 + -7x = 0 Solving -8 + -7x = 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 + -7x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -7x = 0 + 8 -7x = 0 + 8 Combine like terms: 0 + 8 = 8 -7x = 8 Divide each side by '-7'. x = -1.142857143 Simplifying x = -1.142857143

Subproblem 2

Set the factor '(14 + -1x)' equal to zero and attempt to solve: Simplifying 14 + -1x = 0 Solving 14 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + -1x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + -1x = 0 + -14 -1x = 0 + -14 Combine like terms: 0 + -14 = -14 -1x = -14 Divide each side by '-1'. x = 14 Simplifying x = 14

Solution

x = {-1.142857143, 14}

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