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Simplifying 2x(x + 3) + -1 = 7x Reorder the terms: 2x(3 + x) + -1 = 7x (3 * 2x + x * 2x) + -1 = 7x (6x + 2x2) + -1 = 7x Reorder the terms: -1 + 6x + 2x2 = 7x Solving -1 + 6x + 2x2 = 7x Solving for variable 'x'. Reorder the terms: -1 + 6x + -7x + 2x2 = 7x + -7x Combine like terms: 6x + -7x = -1x -1 + -1x + 2x2 = 7x + -7x Combine like terms: 7x + -7x = 0 -1 + -1x + 2x2 = 0 Factor a trinomial. (-1 + -2x)(1 + -1x) = 0Subproblem 1
Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 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 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5Subproblem 2
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 = 1Solution
x = {-0.5, 1}
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