Question

The value of (a+b)x(a - b) is

chapter name :- Vectors
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Answer 1

Explanation:

The answer for your question is in the attachment.

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Answer 2

Answer:

Consider given the expression,

⇒x3−ax+b and  x−1,x−2 are the factor of this polynomial,

Given that, x−1=0 is the factor of x3−ax+b

So, x=1 will be satisfied to  x3−ax+b

Hence,

13−a.1+b=0

−a+b=−1

a−b=1     ……(1)

Given that, x−2=0 is the factor of x3−ax+b

So, x=2 will be satisfied to  x3−ax+b

23−a.2+b=0

−2a+b=−2

2a−b=2      ……(2)

Subtract equation 1st from equation 2nd,

a=1

put the value of a in equation 1st,

b=0

Hence, this is the answer.