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Simplifying x2 + (3x2 + -30x + 25) = 25 Reorder the terms: x2 + (25 + -30x + 3x2) = 25 Remove parenthesis around (25 + -30x + 3x2) x2 + 25 + -30x + 3x2 = 25 Reorder the terms: 25 + -30x + x2 + 3x2 = 25 Combine like terms: x2 + 3x2 = 4x2 25 + -30x + 4x2 = 25 Add '-25' to each side of the equation. 25 + -30x + -25 + 4x2 = 25 + -25 Reorder the terms: 25 + -25 + -30x + 4x2 = 25 + -25 Combine like terms: 25 + -25 = 0 0 + -30x + 4x2 = 25 + -25 -30x + 4x2 = 25 + -25 Combine like terms: 25 + -25 = 0 -30x + 4x2 = 0 Solving -30x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2x'. 2x(-15 + 2x) = 0 Ignore the factor 2.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(-15 + 2x)' equal to zero and attempt to solve: Simplifying -15 + 2x = 0 Solving -15 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 2x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 2x = 0 + 15 2x = 0 + 15 Combine like terms: 0 + 15 = 15 2x = 15 Divide each side by '2'. x = 7.5 Simplifying x = 7.5Solution
x = {0, 7.5}
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