# 103 multiplied by 98 with using identities

2
by Pha

2015-03-02T16:56:25+05:30

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103 * 98 = (100 + 3) (100 -2 ) = 100² + 3*100  - 100 * 2 - 3 * 2
= 10000 + 300 -200- 6
= 10094

we use identity : (A+B)(A-C) = A^2 + AB - AC - BC
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103 * 98 = (102 + 1) * 98 = 102 * 98 + 98
= (100 + 2) (100 -2 )  + 98
= 100² - 2² + 98
= 10 094

2015-03-02T17:02:41+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
103*98 =(100+3) * (100-2) =(100)^2+(3-2)100+(3*-2) =10000+100-6 =10094