0=7x^2+35x-42

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Solution for 0=7x^2+35x-42 equation:


Simplifying
0 = 7x2 + 35x + -42

Reorder the terms:
0 = -42 + 35x + 7x2

Solving
0 = -42 + 35x + 7x2

Solving for variable 'x'.

Combine like terms: 0 + 42 = 42
42 + -35x + -7x2 = -42 + 35x + 7x2 + 42 + -35x + -7x2

Reorder the terms:
42 + -35x + -7x2 = -42 + 42 + 35x + -35x + 7x2 + -7x2

Combine like terms: -42 + 42 = 0
42 + -35x + -7x2 = 0 + 35x + -35x + 7x2 + -7x2
42 + -35x + -7x2 = 35x + -35x + 7x2 + -7x2

Combine like terms: 35x + -35x = 0
42 + -35x + -7x2 = 0 + 7x2 + -7x2
42 + -35x + -7x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
42 + -35x + -7x2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(6 + -5x + -1x2) = 0

Factor a trinomial.
7((1 + -1x)(6 + x)) = 0

Ignore the factor 7.

Subproblem 1

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

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 = {1, -6}

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