Question

Q11 If x=3, y=2, then (x-7)(x24xy+y) is​

Answer 1

Answer:

Correct option is

A

4

3

Let x=7a;y=3a

So,

x

2

−y

2

xy+y

2

=

(7a)

2

−(3a)

2

(7a)(3a)+(3a)

2

=

49a

2

−9a

2

21a

2

+9a

2

=

40a

2

30a

2

=

4

3

Hence, option A.