7x^2-4x-2=1

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Solution for 7x^2-4x-2=1 equation:


Simplifying
7x2 + -4x + -2 = 1

Reorder the terms:
-2 + -4x + 7x2 = 1

Solving
-2 + -4x + 7x2 = 1

Solving for variable 'x'.

Reorder the terms:
-2 + -1 + -4x + 7x2 = 1 + -1

Combine like terms: -2 + -1 = -3
-3 + -4x + 7x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-3 + -4x + 7x2 = 0

Factor a trinomial.
(-3 + -7x)(1 + -1x) = 0

Subproblem 1

Set the factor '(-3 + -7x)' equal to zero and attempt to solve: Simplifying -3 + -7x = 0 Solving -3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -7x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -7x = 0 + 3 -7x = 0 + 3 Combine like terms: 0 + 3 = 3 -7x = 3 Divide each side by '-7'. x = -0.4285714286 Simplifying x = -0.4285714286

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 = {-0.4285714286, 1}

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