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if (4×+9) is multiplied to (4×-9), what is the result?
A.16ײ-81
B.8ײ-18
C.8ײ+18
D.16ײ+81​


Sagot :

Answer:

A. 16x^2 -81

Step-by-step explanation:

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

F.O.I.L. method

16x^2 - 36x +36x -81

16x^2 -81

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