Question

$(4x + 5y) {?}^{2}$
​

Answer 1

${(4x + 5y)}^{2} \\ \\ = ( {4x) }^{2} + 2.4x.5y + ( {5y)}^{2} \\ \\ = 16 {x}^{2} + 40xy + 25 {y}^{2}$

Answer 2

Step-by-step explanation:

(4x+5y)2

(4x)²+(5y)²+2(4x)(5y)

16x²+25y²+40xy