Question

product og (4x+5y)(4x+5y)​

Answer 1

Answer:

16x+20y

Step-by-step explanation:

like and following

Answer 2

Answer:

$\sf ➳(4x + 5y)(4x + 5y)$

$➳ \sf {(4x +5y) }^{2}$

$\sf➳ {4x}^{2} + 2(4x \times 5y) + {5y}^{2}$

$\sf➳16 {x}^{2} + 2(20xy) + 25 {y}^{2}$

$➳ \sf16 {x}^{2} + 40xy + 25 {x}^{2}$

Identity used:-

➳(x + y)² = (x)² + 2xy + (y)²