2x^2+7x=15*15

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Solution for 2x^2+7x=15*15 equation:


Simplifying
2x2 + 7x = 15 * 15

Reorder the terms:
7x + 2x2 = 15 * 15

Multiply 15 * 15
7x + 2x2 = 225

Solving
7x + 2x2 = 225

Solving for variable 'x'.

Reorder the terms:
-225 + 7x + 2x2 = 225 + -225

Combine like terms: 225 + -225 = 0
-225 + 7x + 2x2 = 0

Factor a trinomial.
(-25 + -2x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-25 + -2x)' equal to zero and attempt to solve: Simplifying -25 + -2x = 0 Solving -25 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + -2x = 0 + 25 Combine like terms: -25 + 25 = 0 0 + -2x = 0 + 25 -2x = 0 + 25 Combine like terms: 0 + 25 = 25 -2x = 25 Divide each side by '-2'. x = -12.5 Simplifying x = -12.5

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 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 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-12.5, 9}

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