0=2x^2+5x-42

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Solution for 0=2x^2+5x-42 equation:


Simplifying
0 = 2x2 + 5x + -42

Reorder the terms:
0 = -42 + 5x + 2x2

Solving
0 = -42 + 5x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + 42 = 42
42 + -5x + -2x2 = -42 + 5x + 2x2 + 42 + -5x + -2x2

Reorder the terms:
42 + -5x + -2x2 = -42 + 42 + 5x + -5x + 2x2 + -2x2

Combine like terms: -42 + 42 = 0
42 + -5x + -2x2 = 0 + 5x + -5x + 2x2 + -2x2
42 + -5x + -2x2 = 5x + -5x + 2x2 + -2x2

Combine like terms: 5x + -5x = 0
42 + -5x + -2x2 = 0 + 2x2 + -2x2
42 + -5x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
42 + -5x + -2x2 = 0

Factor a trinomial.
(7 + -2x)(6 + x) = 0

Subproblem 1

Set the factor '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 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 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5

Subproblem 2

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Solution

x = {3.5, -6}

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