Question

c
2. The H.C.F. of x2 - xy – 2y2 and 2x2 – xy –
y2 is:
(a) (x + y)
(b) (x - y)
(c) (2x - 3y)
(d) None​

Answer 1

Answer:

Step-by-step explanation:1st expression=x^2-xy-2y^2

=x^2-(2-1)xy-2y^2

=x^2-2xy+xy-2y^2

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

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

2nd expression=2x^2-xy-y^2

=2x^2-(2-1)xy-y^2

=2x^2-2xy+xy-y^2

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

=2x+y(x-y)

Therefore Ans is d none