3 years ago

FACTORIZAR LOS SIGUIENTES POLINOMIOS. a2 - 81 =

Mathematics

1 answer:

Sphinxa [80]3 years ago

7 0

Answer:

(a+9)(a-9)

Step-by-step explanation:

Both terms are perfect squares, use the difference of squares formula

a^2-b^2=(a+b)(a-b) where a=a and b=9

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