0=4x^2-7x-2

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Solution for 0=4x^2-7x-2 equation:


Simplifying
0 = 4x2 + -7x + -2

Reorder the terms:
0 = -2 + -7x + 4x2

Solving
0 = -2 + -7x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + 2 = 2
2 + 7x + -4x2 = -2 + -7x + 4x2 + 2 + 7x + -4x2

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

Combine like terms: -2 + 2 = 0
2 + 7x + -4x2 = 0 + -7x + 7x + 4x2 + -4x2
2 + 7x + -4x2 = -7x + 7x + 4x2 + -4x2

Combine like terms: -7x + 7x = 0
2 + 7x + -4x2 = 0 + 4x2 + -4x2
2 + 7x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
2 + 7x + -4x2 = 0

Factor a trinomial.
(2 + -1x)(1 + 4x) = 0

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(1 + 4x)' equal to zero and attempt to solve: Simplifying 1 + 4x = 0 Solving 1 + 4x = 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 + 4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4x = 0 + -1 4x = 0 + -1 Combine like terms: 0 + -1 = -1 4x = -1 Divide each side by '4'. x = -0.25 Simplifying x = -0.25

Solution

x = {2, -0.25}

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