7x^2=8x-1

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Solution for 7x^2=8x-1 equation:


Simplifying
7x2 = 8x + -1

Reorder the terms:
7x2 = -1 + 8x

Solving
7x2 = -1 + 8x

Solving for variable 'x'.

Reorder the terms:
1 + -8x + 7x2 = -1 + 8x + 1 + -8x

Reorder the terms:
1 + -8x + 7x2 = -1 + 1 + 8x + -8x

Combine like terms: -1 + 1 = 0
1 + -8x + 7x2 = 0 + 8x + -8x
1 + -8x + 7x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
1 + -8x + 7x2 = 0

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

Subproblem 1

Set the factor '(1 + -7x)' equal to zero and attempt to solve: Simplifying 1 + -7x = 0 Solving 1 + -7x = 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 + -7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -7x = 0 + -1 -7x = 0 + -1 Combine like terms: 0 + -1 = -1 -7x = -1 Divide each side by '-7'. x = 0.1428571429 Simplifying x = 0.1428571429

Subproblem 2

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

Solution

x = {0.1428571429, 1}

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