Question

$(4 + x) 2$
$( \frac{1}{3} a + \frac{1}{4} b){2}$
$(9m + n) {2}$
$(12 {x}^{2} + y {)}^{2}$
​

Answer 1

1)$x^{2} +8x+16$

2)$2/3a+1/2b$

3)18m+2n

4)$144x^{4} +24x^{2} +y+y^{2}$