Question

Q;1 Expand:
(7x+2y)^2
Answer:​

Answer 1

Answer:

${(7x + 2y)}^{2} \\ \\ = {(7x)}^{2} + 2 \times 7x \times 2y + ( {2y)}^{2} \\ \\ = 49 {x}^{2} + 28xy + 4 {y}^{2} \\ \\ formula \: used \\ \\ {(a + b)}^{2} \\ \\ = {a}^{2} + 2ab + {b}^{2}$

hope it helps uH :)

Answer 2

$\huge\mathfrak\red{Answer}$

${(7x + 2y)}^{2}$

$( {7x)}^{2} + 2(7x)(2y) + {(2y)}^{2}$

$49 {y}^{2} + 28x + 4 {y}^{2}$