wonderman
wonderman wonderman
  • 22-02-2017
  • Mathematics
contestada

answer these three for me pls guys

answer these three for me pls guys class=
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aries5288
aries5288 aries5288
  • 22-02-2017
11) X= 7, X= -7
(X+7)(X-7)=X^2+7X-7X-49=X^2-49

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