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Simplifying 4y4 + -28y2 + 49 = 0 Reorder the terms: 49 + -28y2 + 4y4 = 0 Solving 49 + -28y2 + 4y4 = 0 Solving for variable 'y'. Factor a trinomial. (7 + -2y2)(7 + -2y2) = 0Subproblem 1
Set the factor '(7 + -2y2)' equal to zero and attempt to solve: Simplifying 7 + -2y2 = 0 Solving 7 + -2y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2y2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2y2 = 0 + -7 -2y2 = 0 + -7 Combine like terms: 0 + -7 = -7 -2y2 = -7 Divide each side by '-2'. y2 = 3.5 Simplifying y2 = 3.5 Take the square root of each side: y = {-1.870828693, 1.870828693}Subproblem 2
Set the factor '(7 + -2y2)' equal to zero and attempt to solve: Simplifying 7 + -2y2 = 0 Solving 7 + -2y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2y2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2y2 = 0 + -7 -2y2 = 0 + -7 Combine like terms: 0 + -7 = -7 -2y2 = -7 Divide each side by '-2'. y2 = 3.5 Simplifying y2 = 3.5 Take the square root of each side: y = {-1.870828693, 1.870828693}Solution
y = {-1.870828693, 1.870828693, -1.870828693, 1.870828693}
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