Question

(2a-4b-5c)sqaure-(2a+4b-5c) square
step by step
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Answer 1

$\huge\red{Answer}$

According to the equation,

(a+b+c)

2

=a

2

+b

2

+c

2

+2ab+2bc+2ca

So we get,

Using the formula we can it write it as

(−3a+4b−5c)

2

=(−3a)

2

+(4b)

2

+(−5c)

2

+2(−3a)(4b)+2(4b)(−5c)+2(−5c)(−3a)

On further calculation we get,

(−3a+4b−5c)

2

=9a

2

+16b

2

+25c

2

−24ab−40bc+30ca

Answer 2

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