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Simplifying 3x2 + -25x + 27 = 0 Reorder the terms: 27 + -25x + 3x2 = 0 Solving 27 + -25x + 3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 9 + -8.333333333x + x2 = 0 Move the constant term to the right: Add '-9' to each side of the equation. 9 + -8.333333333x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + -8.333333333x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -8.333333333x + x2 = 0 + -9 -8.333333333x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 -8.333333333x + x2 = -9 The x term is -8.333333333x. Take half its coefficient (-4.166666667). Square it (17.36111111) and add it to both sides. Add '17.36111111' to each side of the equation. -8.333333333x + 17.36111111 + x2 = -9 + 17.36111111 Reorder the terms: 17.36111111 + -8.333333333x + x2 = -9 + 17.36111111 Combine like terms: -9 + 17.36111111 = 8.36111111 17.36111111 + -8.333333333x + x2 = 8.36111111 Factor a perfect square on the left side: (x + -4.166666667)(x + -4.166666667) = 8.36111111 Calculate the square root of the right side: 2.891558595 Break this problem into two subproblems by setting (x + -4.166666667) equal to 2.891558595 and -2.891558595.Subproblem 1
x + -4.166666667 = 2.891558595 Simplifying x + -4.166666667 = 2.891558595 Reorder the terms: -4.166666667 + x = 2.891558595 Solving -4.166666667 + x = 2.891558595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.166666667' to each side of the equation. -4.166666667 + 4.166666667 + x = 2.891558595 + 4.166666667 Combine like terms: -4.166666667 + 4.166666667 = 0.000000000 0.000000000 + x = 2.891558595 + 4.166666667 x = 2.891558595 + 4.166666667 Combine like terms: 2.891558595 + 4.166666667 = 7.058225262 x = 7.058225262 Simplifying x = 7.058225262Subproblem 2
x + -4.166666667 = -2.891558595 Simplifying x + -4.166666667 = -2.891558595 Reorder the terms: -4.166666667 + x = -2.891558595 Solving -4.166666667 + x = -2.891558595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.166666667' to each side of the equation. -4.166666667 + 4.166666667 + x = -2.891558595 + 4.166666667 Combine like terms: -4.166666667 + 4.166666667 = 0.000000000 0.000000000 + x = -2.891558595 + 4.166666667 x = -2.891558595 + 4.166666667 Combine like terms: -2.891558595 + 4.166666667 = 1.275108072 x = 1.275108072 Simplifying x = 1.275108072Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.058225262, 1.275108072}
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