(5y+6)(5y+6)=24

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Solution for (5y+6)(5y+6)=24 equation:


Simplifying
(5y + 6)(5y + 6) = 24

Reorder the terms:
(6 + 5y)(5y + 6) = 24

Reorder the terms:
(6 + 5y)(6 + 5y) = 24

Multiply (6 + 5y) * (6 + 5y)
(6(6 + 5y) + 5y * (6 + 5y)) = 24
((6 * 6 + 5y * 6) + 5y * (6 + 5y)) = 24
((36 + 30y) + 5y * (6 + 5y)) = 24
(36 + 30y + (6 * 5y + 5y * 5y)) = 24
(36 + 30y + (30y + 25y2)) = 24

Combine like terms: 30y + 30y = 60y
(36 + 60y + 25y2) = 24

Solving
36 + 60y + 25y2 = 24

Solving for variable 'y'.

Reorder the terms:
36 + -24 + 60y + 25y2 = 24 + -24

Combine like terms: 36 + -24 = 12
12 + 60y + 25y2 = 24 + -24

Combine like terms: 24 + -24 = 0
12 + 60y + 25y2 = 0

Begin completing the square.  Divide all terms by
25 the coefficient of the squared term: 

Divide each side by '25'.
0.48 + 2.4y + y2 = 0

Move the constant term to the right:

Add '-0.48' to each side of the equation.
0.48 + 2.4y + -0.48 + y2 = 0 + -0.48

Reorder the terms:
0.48 + -0.48 + 2.4y + y2 = 0 + -0.48

Combine like terms: 0.48 + -0.48 = 0.00
0.00 + 2.4y + y2 = 0 + -0.48
2.4y + y2 = 0 + -0.48

Combine like terms: 0 + -0.48 = -0.48
2.4y + y2 = -0.48

The y term is 2.4y.  Take half its coefficient (1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
2.4y + 1.44 + y2 = -0.48 + 1.44

Reorder the terms:
1.44 + 2.4y + y2 = -0.48 + 1.44

Combine like terms: -0.48 + 1.44 = 0.96
1.44 + 2.4y + y2 = 0.96

Factor a perfect square on the left side:
(y + 1.2)(y + 1.2) = 0.96

Calculate the square root of the right side: 0.979795897

Break this problem into two subproblems by setting 
(y + 1.2) equal to 0.979795897 and -0.979795897.

Subproblem 1

y + 1.2 = 0.979795897 Simplifying y + 1.2 = 0.979795897 Reorder the terms: 1.2 + y = 0.979795897 Solving 1.2 + y = 0.979795897 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + y = 0.979795897 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + y = 0.979795897 + -1.2 y = 0.979795897 + -1.2 Combine like terms: 0.979795897 + -1.2 = -0.220204103 y = -0.220204103 Simplifying y = -0.220204103

Subproblem 2

y + 1.2 = -0.979795897 Simplifying y + 1.2 = -0.979795897 Reorder the terms: 1.2 + y = -0.979795897 Solving 1.2 + y = -0.979795897 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + y = -0.979795897 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + y = -0.979795897 + -1.2 y = -0.979795897 + -1.2 Combine like terms: -0.979795897 + -1.2 = -2.179795897 y = -2.179795897 Simplifying y = -2.179795897

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-0.220204103, -2.179795897}

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