expand using suitable identity(3a+5b-c)^2

Question

expand using suitable identity(3a+5b-c)^2

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Faith 5 months 2021-12-10T18:06:35+00:00 2 Answers 0 views 0

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  1. Faith
    0
    2021-12-10T18:07:57+00:00
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    Step-by-step explanation:

    GIVEN : (3a+5b-c)² =?

    by using identity .ie,. (a+b+c)²= a²+b²+c²+2ab+2bc+2ac

    putting the given values of a=38. , b=5b. c=(-c)

    : ==>( 3a+5b-c)²= (3a)² +(5b)²+ (-c)²+ 2*3a*5b + 2*5b*(-c) + 2*(-c)*3a

    ==> 9a²+25b²-c²+30ab -10bc -6ac

    so we get ,

    (3a+5b-c)²= 9a²+25b²-c²+30ab-10bc-6ac

    plz mark as brainliest….

  2. Serenity
    0
    2021-12-10T18:08:23+00:00
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    9a²+25b²+c²+30ab-6ac-10bc

    Step-by-step explanation:

    formula:- a²+b²+c²+2ab+2bc+2ca

    =(3a)²+(5b)²+(-c)²+2×3a×5b+2×5b×(-c)

    =9a²+25b²+c²+30ab-6ac-10bc

    here’s ur answer mate

    HOPE IT HELPS

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