Question

Evalulate: (-3a+4b-5c)²​

Answer 1

Answer:

9a^2+16b^2 +5c^2 -24ab-40bc +30ac is the answers

Step-by-step explanation:

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Answer 2

Answer:

(-3a+4b-5c)²​

=(-3a)^2+(4b)^2+(-5c)^2+2(-3a)(4b)+2(4b)(-5c)+2(-5c)(-3a)

=9a^2+16b^2+25c^2-24ab-40bc+30ca

Used Formula

(a+b+c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc +2ca