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Simplifying (10x + -3)(x + 7) = 0 Reorder the terms: (-3 + 10x)(x + 7) = 0 Reorder the terms: (-3 + 10x)(7 + x) = 0 Multiply (-3 + 10x) * (7 + x) (-3(7 + x) + 10x * (7 + x)) = 0 ((7 * -3 + x * -3) + 10x * (7 + x)) = 0 ((-21 + -3x) + 10x * (7 + x)) = 0 (-21 + -3x + (7 * 10x + x * 10x)) = 0 (-21 + -3x + (70x + 10x2)) = 0 Combine like terms: -3x + 70x = 67x (-21 + 67x + 10x2) = 0 Solving -21 + 67x + 10x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -1x)(3 + -10x) = 0Subproblem 1
Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7Subproblem 2
Set the factor '(3 + -10x)' equal to zero and attempt to solve: Simplifying 3 + -10x = 0 Solving 3 + -10x = 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 + -10x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -10x = 0 + -3 -10x = 0 + -3 Combine like terms: 0 + -3 = -3 -10x = -3 Divide each side by '-10'. x = 0.3 Simplifying x = 0.3Solution
x = {-7, 0.3}
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