Using suitabe identity evaluate 107 X 103 OR Expand the following using suitable identity (4a – 2b – 3c)^2​

Question

Using suitabe identity evaluate 107 X 103
OR
Expand the following using suitable identity (4a – 2b – 3c)^2​

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Reagan 2 weeks 2021-09-11T11:41:10+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-11T11:42:52+00:00

    Answer:

    12121

    Step-by-step explanation:

    107×103

    = 100+7 , 100+3

    identity = (x+a)(x+b)= x²+(a+b)x+ab

    = (100)²+(7+3)×100+(7×3)

    = 10000+ 2100+21

    =12121

    0
    2021-09-11T11:42:53+00:00

    Step-by-step explanation:

    107 × 103

    = (100+7) (100+3)

    by applying identity (x+a) (x+b)= x^2 + x(a+b)+ab

    put x=100,a=7,b=3

    100^2+100(7+3)+7×3

    =10000+100×10+21

    =10000+1000+21

    =11021

    hope this will helpful.

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