Question

I Expand using suitable formula:

1. (4a + 3b + c)²​

Answer 1

Step-by-step explanation:

it is in the form of (a+b) ^2=16(a) ^2+9(b) ^2+c^2

Answer 2

Answer:

$16a^{2}+9b^{2}+c^{2}+24ab+6bc+8ac$

step -by-step explanation:

$(4a+3b+c)(4a+3b+c)\\16a^{2} +12ab+4ac+12ab+9b^{2} +3bc+4ac+3bc+c^{2}\\16a^{2}+9b^{2}+c^{2}+24ab+6bc+8ac$