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Simplifying 5x2 + 26x + 21 = 0 Reorder the terms: 21 + 26x + 5x2 = 0 Solving 21 + 26x + 5x2 = 0 Solving for variable 'x'. Factor a trinomial. (21 + 5x)(1 + x) = 0Subproblem 1
Set the factor '(21 + 5x)' equal to zero and attempt to solve: Simplifying 21 + 5x = 0 Solving 21 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 5x = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 5x = 0 + -21 5x = 0 + -21 Combine like terms: 0 + -21 = -21 5x = -21 Divide each side by '5'. x = -4.2 Simplifying x = -4.2Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {-4.2, -1}
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