(7x + 3)(7x - 3) =.....A.14Xpankat2 + 7x - 9.B.49xpankat2 + 7x - 9.C.14xPANKAT2 -9. D.49xpankat2

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(7x + 3)(7x - 3) =.....
A.14Xpankat2 + 7x - 9.
B.49xpankat2 + 7x - 9.
C.14xPANKAT2 -9.
D.49xpankat2 - 9.

Jawaban:

(7x + 3) (7x-3)

= 49x² - 21x + 21x - 9

= 49x² - 9

jadi jawabannya yang D.

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