Question

let us factorise=x^2-2xy-3y^2​

Answer 1

Answer:

x²-2xy-3y²

(x²-2xy +y²)-4y²

(x-y)²-(2y)²=(x-y-2y)(x-y+2y)=(x-3y)(x+y)

Answer 2

Answer:

(x + y)(x - 3y)

Step-by-step explanation:

We can use trinomial factorisation to split the middle term

Product = -3x²y²

Sum = 2xy

x² - 2x - 3y²

= x² - 3xy + xy - 3y²

= x(x - 3y) + y(x - 3y)

= (x + y)(x - 3y)