use : (x+a) (x+b)=x²+(a+b)x+ab, find 101×102
Answers
Answered by
4
Answer:
10302
Step-by-step explanation:
100+1*100+2
100²+(1+2)100+1*2
10000+300+2
10302
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Answered by
3
Answer:
(100+1) (100+2)
100×100+(1+2)100+1×2
10000+(3)100+2
10000+300+2
10302
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