-1(4x^2-22x-42)=0

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Solution for -1(4x^2-22x-42)=0 equation:


Simplifying
-1(4x2 + -22x + -42) = 0

Reorder the terms:
-1(-42 + -22x + 4x2) = 0
(-42 * -1 + -22x * -1 + 4x2 * -1) = 0
(42 + 22x + -4x2) = 0

Solving
42 + 22x + -4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(21 + 11x + -2x2) = 0

Factor a trinomial.
2((7 + -1x)(3 + 2x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Subproblem 2

Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 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 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5

Solution

x = {7, -1.5}

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