Question

Simplify (x + 1)(x
3 − 3x
2 − 4x − 5) − (3x − 2)(x
3 − x
2 + 5x − 7)

Answer 1

Answer:

(x+3)(x

2

−5x+7)=x(x

2

−5x+7)+3(x

2

−5x+7)

=x

3

−5x

2

+7x+3x

2

−15x+21

=x

3

−2x

2

−8x+21

Hence, the answer is x

3

−2x

2

−8x+21.

Answer 2

Step-by-step explanation:

(x+3)(x

2

−5x+7)=x(x

2

−5x+7)+3(x

2

−5x+7)

=x

3

−5x

2

+7x+3x

2

−15x+21

=x

3

−2x

2

−8x+21

Hence, the answer is x

3

−2x

2

−8x+21.