Question

Factorise each of the following questions: 25x² -- 16y²

Answer 1

Step-by-step explanation:

$25 {x}^{2} - 16 {y}^{2} \\ (5x + 4y)(5x - 4y) \\ x = + - \frac{4y}{5} \\ y = + - \frac{5x}{4}$

Put the value of x in the 2nd equation find the value of x and put it in 1st to find y

Answer 2

Here is the solution of this question.