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Simplifying (3x + 7)(7x + -3) = 0 Reorder the terms: (7 + 3x)(7x + -3) = 0 Reorder the terms: (7 + 3x)(-3 + 7x) = 0 Multiply (7 + 3x) * (-3 + 7x) (7(-3 + 7x) + 3x * (-3 + 7x)) = 0 ((-3 * 7 + 7x * 7) + 3x * (-3 + 7x)) = 0 ((-21 + 49x) + 3x * (-3 + 7x)) = 0 (-21 + 49x + (-3 * 3x + 7x * 3x)) = 0 (-21 + 49x + (-9x + 21x2)) = 0 Combine like terms: 49x + -9x = 40x (-21 + 40x + 21x2) = 0 Solving -21 + 40x + 21x2 = 0 Solving for variable 'x'. Factor a trinomial. (-7 + -3x)(3 + -7x) = 0Subproblem 1
Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 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 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333Subproblem 2
Set the factor '(3 + -7x)' equal to zero and attempt to solve: Simplifying 3 + -7x = 0 Solving 3 + -7x = 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 + -7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7x = 0 + -3 -7x = 0 + -3 Combine like terms: 0 + -3 = -3 -7x = -3 Divide each side by '-7'. x = 0.4285714286 Simplifying x = 0.4285714286Solution
x = {-2.333333333, 0.4285714286}
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