Question

$(4a+*) ^{2} =*+*+9 b^{2}$

Answer 1

(4a+3b)^2 = 16a^2 + 24ab+9b^2

Answer 2

$(4a+*)^2=*+*+9b^2$
$(4a+3b)^2=16a^2+24ab+9b^2$