Question

Find the product using suitable identity

103 x 102

Answer 1

solution

103×102

=(100+3)(100+2)

=100²+(3×2)100+3×2

=10000+500+6

=10506 (ans)

Answer 2

Answer:

103×102

(100+3) ×(100+2)

Identity used = (x+a) (x+b) =x²+(a+b)x+ab

Here:-

x=100

a=3

b=2

(100+3) (100+2)

=>(100)²+(3+2)×100+(3×2)

=>10000+(5×100)+6

=>10000+500+6

=>10506

103×102 =10506

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