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Simplifying 2x2 + -10x + (k + -5) = 0 Reorder the terms: 2x2 + -10x + (-5 + k) = 0 Remove parenthesis around (-5 + k) 2x2 + -10x + -5 + k = 0 Reorder the terms: -5 + k + -10x + 2x2 = 0 Solving -5 + k + -10x + 2x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '5' to each side of the equation. -5 + k + -10x + 5 + 2x2 = 0 + 5 Reorder the terms: -5 + 5 + k + -10x + 2x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + k + -10x + 2x2 = 0 + 5 k + -10x + 2x2 = 0 + 5 Combine like terms: 0 + 5 = 5 k + -10x + 2x2 = 5 Add '10x' to each side of the equation. k + -10x + 10x + 2x2 = 5 + 10x Combine like terms: -10x + 10x = 0 k + 0 + 2x2 = 5 + 10x k + 2x2 = 5 + 10x Add '-2x2' to each side of the equation. k + 2x2 + -2x2 = 5 + 10x + -2x2 Combine like terms: 2x2 + -2x2 = 0 k + 0 = 5 + 10x + -2x2 k = 5 + 10x + -2x2 Simplifying k = 5 + 10x + -2x2
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