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Mathematics 8 Online
OpenStudy (anonymous):

Factor completely: 16x2 − 81

OpenStudy (harsimran_hs4):

for factorization 16x2 - 81 = 0 x2 = 81/16 can you tell me two values of x now?

OpenStudy (harsimran_hs4):

suppose the two values you got are a and -a then (x-a)(x+a) is the factorization of this expression

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