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29 July, 01:33

Which expression is equivalent to 7a4 - 28?

A) - 7 (a2 + 2) (a2 + 2)

B) 7 (a2 + 2) (a2 - 2)

Eliminate

C) 7 (a2 + 2) (a2 + 2)

D) 7 (a2 - 2) (a2 - 2)

+4
Answers (2)
  1. 29 July, 03:59
    0
    Its none of them because to get 28 you need 7 and a 4 and there is no 4
  2. 29 July, 05:04
    0
    The answer is b. You can also simplify it more 7 (a-2) (a+2) (a2+2)
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