Seudónimo Seudónimo
  • 01-05-2016
  • Mathematics
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What is (x-5) (x+5) ?

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BossLife123
BossLife123 BossLife123
  • 01-05-2016
Hey there, we are going to mutliply polynomials, (x-5)=(x+-5) and (x+5)=(x+5), (x)(x)+(x)(5)+(-5)(x)+(-5)(5)=x²+5x-5x-25=x²-25. Therefore, (x-5) (x+5) = x²-25
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