Question

13.

Answer 1

$\huge \sf༆ Answer ༄$

Let's solve ~

• $\sf {x}^{2} - 10xy + 21 {y}^{2}$

• $\sf {x}^{2} - 7xy - 3xy + 21 {y}^{2}$

• $\sf x(x - 7y) - 3y(x - 7y)$

• $\sf( x - 7y)(x - 3y)$

Hence, the correct choice is ~ A

Answer 2

Answer:

A

Step-by-step explanation: