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kolbaska11 [484]
3 years ago
5

Factor completely 49x2 − 9.

Mathematics
1 answer:
Lana71 [14]3 years ago
6 0

Answer:

number 1

Step-by-step explanation:

faster way to it to try to multiple the first to the 2nd one .

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

( 7x .7x - 7x.3 ) + ( 3 .7x - 3.3)

49x^2 -21x + 21x - 9

it take you back to the original equation

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