Question

write (5a + 4b + 3c)2 in expanded form​

Answer 1

Answer:

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

using identity

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

(5a)^2+(4b)^2+(3c)^3+2×5a×4b+2×4b×3c+2×3c×4b

25a^2 + 16b^2 + 9c^2

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