ker2minkimadcr ker2minkimadcr
  • 25-11-2016
  • Mathematics
contestada

Multiply. (j + 7)(j – 7)

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apologiabiology
apologiabiology apologiabiology
  • 25-11-2016
esaey
obviously a diference of 2 perfect suqres
(a-b)(a+b)=a²-b²
so
(j+7)(j-7)=j²-7² or j²-49
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mehranikita
mehranikita mehranikita
  • 25-11-2016
your answer is j rase d power 2-49
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