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Dmitry_Shevchenko [17]
2 years ago
12

Choose the correct product of (9x − 5)(9x + 5).

Mathematics
2 answers:
MakcuM [25]2 years ago
6 0

Answer:

The Answer is B

Step-by-step explanation:

(9x−5)(9x+5)

=(9x+−5)(9x+5)

=(9x)(9x)+(9x)(5)+(−5)(9x)+(−5)(5)

=81x2+45x−45x−25

=81x2−25    

Virty [35]2 years ago
4 0
Hi,
(a+b)(a-b=a²-b²
Thus (9x)²-5²=81x²-25
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