(y-7)(y-7)=0

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Solution for (y-7)(y-7)=0 equation:


Simplifying
(y + -7)(y + -7) = 0

Reorder the terms:
(-7 + y)(y + -7) = 0

Reorder the terms:
(-7 + y)(-7 + y) = 0

Multiply (-7 + y) * (-7 + y)
(-7(-7 + y) + y(-7 + y)) = 0
((-7 * -7 + y * -7) + y(-7 + y)) = 0
((49 + -7y) + y(-7 + y)) = 0
(49 + -7y + (-7 * y + y * y)) = 0
(49 + -7y + (-7y + y2)) = 0

Combine like terms: -7y + -7y = -14y
(49 + -14y + y2) = 0

Solving
49 + -14y + y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(7 + -1y)(7 + -1y) = 0

Subproblem 1

Set the factor '(7 + -1y)' equal to zero and attempt to solve: Simplifying 7 + -1y = 0 Solving 7 + -1y = 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 + -1y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1y = 0 + -7 -1y = 0 + -7 Combine like terms: 0 + -7 = -7 -1y = -7 Divide each side by '-1'. y = 7 Simplifying y = 7

Subproblem 2

Set the factor '(7 + -1y)' equal to zero and attempt to solve: Simplifying 7 + -1y = 0 Solving 7 + -1y = 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 + -1y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1y = 0 + -7 -1y = 0 + -7 Combine like terms: 0 + -7 = -7 -1y = -7 Divide each side by '-1'. y = 7 Simplifying y = 7

Solution

y = {7, 7}

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