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Simplifying 0 = 2x2 + -7x + -30 Reorder the terms: 0 = -30 + -7x + 2x2 Solving 0 = -30 + -7x + 2x2 Solving for variable 'x'. Combine like terms: 0 + 30 = 30 30 + 7x + -2x2 = -30 + -7x + 2x2 + 30 + 7x + -2x2 Reorder the terms: 30 + 7x + -2x2 = -30 + 30 + -7x + 7x + 2x2 + -2x2 Combine like terms: -30 + 30 = 0 30 + 7x + -2x2 = 0 + -7x + 7x + 2x2 + -2x2 30 + 7x + -2x2 = -7x + 7x + 2x2 + -2x2 Combine like terms: -7x + 7x = 0 30 + 7x + -2x2 = 0 + 2x2 + -2x2 30 + 7x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 30 + 7x + -2x2 = 0 Factor a trinomial. (6 + -1x)(5 + 2x) = 0Subproblem 1
Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 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 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6Subproblem 2
Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5Solution
x = {6, -2.5}
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