Question

(x + 3) (x - 4) - (x + 2) (x - 6)​

Answer 1

ANSWER

As x

2

+x−6=(x+3)(x−2)

Let f(x)=2x

4

+x

3

−ax

2

+bx+a+b−1

We get

f(−3)=2(−3)

4

+(−3)

3

−a(−3)

2

+b(−3)+a+b−1=0

⇒134−8a−2b=0⇒4a+b=67→ (1)

And

f(2)=2(2)

4

+2

3

−a(2)

2

+2b+a+b−1=0

⇒39−3a+3b=0⇒a−b=13→(2)

Solving (1) and (2), we get

a=16,b=3

Answer 2

Step-by-step explanation:

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