y=(5a+9b)(5a+9b)

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Solution for y=(5a+9b)(5a+9b) equation: 


Simplifying
y = (5a + 9b)(5a + 9b)

Multiply (5a + 9b) * (5a + 9b)
y = (5a * (5a + 9b) + 9b * (5a + 9b))
y = ((5a * 5a + 9b * 5a) + 9b * (5a + 9b))

Reorder the terms:
y = ((45ab + 25a2) + 9b * (5a + 9b))
y = ((45ab + 25a2) + 9b * (5a + 9b))
y = (45ab + 25a2 + (5a * 9b + 9b * 9b))
y = (45ab + 25a2 + (45ab + 81b2))

Reorder the terms:
y = (45ab + 45ab + 25a2 + 81b2)

Combine like terms: 45ab + 45ab = 90ab
y = (90ab + 25a2 + 81b2)

Solving
y = 90ab + 25a2 + 81b2

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying
y = 90ab + 25a2 + 81b2

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