7x^2-(15x)+8=0

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Solution for 7x^2-(15x)+8=0 equation:


Simplifying
7x2 + -1(15x) + 8 = 0

Remove parenthesis around (15x)
7x2 + -1 * 15x + 8 = 0

Multiply -1 * 15
7x2 + -15x + 8 = 0

Reorder the terms:
8 + -15x + 7x2 = 0

Solving
8 + -15x + 7x2 = 0

Solving for variable 'x'.

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

Solution

x = {1, 1.142857143}

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