Multiply (4x+9)(4x-9)

Math
(4x+9)(4x-9)
Expand (4x+9)(4x-9) using the FOIL Method.
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Apply the distributive property.
4x(4x-9)+9(4x-9)
Apply the distributive property.
4x(4x)+4x⋅-9+9(4x-9)
Apply the distributive property.
4x(4x)+4x⋅-9+9(4x)+9⋅-9
4x(4x)+4x⋅-9+9(4x)+9⋅-9
Simplify and combine like terms.
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Simplify each term.
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Multiply x by x.
4⋅4×2+4x⋅-9+9(4x)+9⋅-9
Multiply 4 by 4.
16×2+4x⋅-9+9(4x)+9⋅-9
Multiply -9 by 4.
16×2-36x+9(4x)+9⋅-9
Multiply 4 by 9.
16×2-36x+36x+9⋅-9
Multiply 9 by -9.
16×2-36x+36x-81
16×2-36x+36x-81
Add -36x and 36x.
16×2+0-81
Add 16×2 and 0.
16×2-81
16×2-81
Multiply (4x+9)(4x-9)

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