Question

expand (a+3b+4)^2
please help​

Answer 1

Answer:

a2+9b2+16+6ab+24b+8a

Step-by-step explanation:

(a+3b+4)^2

a^2+(3b)^2+(4)^2+2(a*3b+3b*4+4*a)

a^2+9b^2+16+6ab+24b+8a