0=5x^2+7x-66

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Solution for 0=5x^2+7x-66 equation:


Simplifying
0 = 5x2 + 7x + -66

Reorder the terms:
0 = -66 + 7x + 5x2

Solving
0 = -66 + 7x + 5x2

Solving for variable 'x'.

Combine like terms: 0 + 66 = 66
66 + -7x + -5x2 = -66 + 7x + 5x2 + 66 + -7x + -5x2

Reorder the terms:
66 + -7x + -5x2 = -66 + 66 + 7x + -7x + 5x2 + -5x2

Combine like terms: -66 + 66 = 0
66 + -7x + -5x2 = 0 + 7x + -7x + 5x2 + -5x2
66 + -7x + -5x2 = 7x + -7x + 5x2 + -5x2

Combine like terms: 7x + -7x = 0
66 + -7x + -5x2 = 0 + 5x2 + -5x2
66 + -7x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
66 + -7x + -5x2 = 0

Factor a trinomial.
(3 + -1x)(22 + 5x) = 0

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

Set the factor '(22 + 5x)' equal to zero and attempt to solve: Simplifying 22 + 5x = 0 Solving 22 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + 5x = 0 + -22 Combine like terms: 22 + -22 = 0 0 + 5x = 0 + -22 5x = 0 + -22 Combine like terms: 0 + -22 = -22 5x = -22 Divide each side by '5'. x = -4.4 Simplifying x = -4.4

Solution

x = {3, -4.4}

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