Question

(2x+5y) ka whole square

Answer 1

(2x+5y)2=4x2 +25y2+20xy

Answer 2

${(2x + 5y)}^{2} = ( {2x)}^{2} + 2 \times 2x + \\ 5y + ( {5y)}^{2} \\ 4 {x}^{2} + 20xy + 25 {y}^{2}$