Question

5
$(5x + 3y)(5x + 3y)$
(a+b)²=a²+b²+2ab​

Answer 1

kiyun nihghokhkhj gbvbynbi

Answer 2

25x² + 9y² + 30xy

Step-by-step explanation:

Using the formula which you gave in the question;

here a = 5x and b = 3y. So;

${(5x + 3y)}^{2} = {(5x)}^{2} + {(3y)}^{2} + 2(5x \times 3y) \\ = > 25 {x}^{2} + 9 {y}^{2} + 2(15xy) \\ = > 25 {x}^{2} + 9 {y}^{2} + 30xy(required \: answer)$