Simplify (9y-2)(9y+2)

Math
(9y-2)(9y+2)
Expand (9y-2)(9y+2) using the FOIL Method.
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Apply the distributive property.
9y(9y+2)-2(9y+2)
Apply the distributive property.
9y(9y)+9y⋅2-2(9y+2)
Apply the distributive property.
9y(9y)+9y⋅2-2(9y)-2⋅2
9y(9y)+9y⋅2-2(9y)-2⋅2
Simplify terms.
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Combine the opposite terms in 9y(9y)+9y⋅2-2(9y)-2⋅2.
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Reorder the factors in the terms 9y⋅2 and -2(9y).
9y(9y)+2⋅9y-2⋅9y-2⋅2
Subtract 2⋅9y from 2⋅9y.
9y(9y)+0-2⋅2
Add 9y(9y) and 0.
9y(9y)-2⋅2
9y(9y)-2⋅2
Simplify each term.
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Multiply y by y.
9⋅9y2-2⋅2
Multiply 9 by 9.
81y2-2⋅2
Multiply -2 by 2.
81y2-4
81y2-4
81y2-4
Simplify (9y-2)(9y+2)

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