Factor completely 49×2 − 9. (7x + 3)(7x − 3) (7x + 3)(x − 3) (7x − 3)(7x − 3) (7x − 3)(x − 3)

Question

Factor completely 49×2 − 9.

(7x + 3)(7x − 3)
(7x + 3)(x − 3)
(7x − 3)(7x − 3)
(7x − 3)(x − 3)

in progress 0
Thanh Hà 3 years 2021-07-22T10:10:16+00:00 1 Answers 12 views 0

Answers ( )

  1. ngochoa
    0
    2021-07-22T10:11:19+00:00
    Reply

    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

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )