Question

what should be suntract from 7x/x²+x-12 to get 3/x-3​

Answer 1

Answer:- Correct option is

A

2x−1

5x

2

−7x+6

Let the rational expression be A that must be subtracted from

2x−1

4x

3

−7x

2

+5

to get 2x

2

−5x+1, therefore, we have:

2x−1

4x

3

−7x

2

+5

−A=2x

2

−5x+1

⇒A=

2x−1

4x

3

−7x

2

+5

−

1

2x

2

−5x+1

⇒A=

2x−1

(4x

3

−7x

2

+5)−(2x−1)(2x

2

−5x+1)

(TakingLCM)

⇒A=

2x−1

(4x

3

−7x

2

+5)−(4x

3

−10x

2

+2x−2x

2

+5x−1)

⇒A=

2x−1

(4x

3

−7x

2

+5)−(4x

3

−12x

2

+7x−1)

⇒A=

2x−1

4x

3

−7x

2

+5−4x

3

+12x

2

−7x+1

⇒A=

2x−1

5x

2

−7x+6

Hence,

2x−1

5x

2

−7x+6

should be subtracted from

2x−1

4x

3

−7x

2

+5

to get 2x

2

−5x+1.

Answer 2

Answer:

hope this answer is helpful for you my friend..