1.

Using (x+a)(x+b) = x2+x (a +b)+ab find value of 102*97​

Answer»

ANSWER:

(x+a)(x+b)=x²+x(a+b)+ab

102×97

(100+2)(100-3)

100²+100(2-3)+2×-3

10000-100-6=9,894

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