Question

(49x^2 – b) solve this question​

Answer 1

Answer:

7x+

2

1

)(7x−

2

1

)=49x

2

−b

⇒49x

2

−

4

1

=49x

2

−b (∵(a−b)(a+b)=a

2

−b

2

)

⇒b=

4

1