Using some algebraic identify evaluate the following 89×87
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0
Answer:
7743
Step-by-step explanation:
this is the right answer ok this is right answer
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Step-by-step explanation:
(80+9)(80+7)
by identity x^2+(a+b)x+ab
=80^2+(9+7)80+9×7
=6400+16×80+63
=6400+1280+63
=.7743
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