Question

If f(x) =x⁴-2x³+3x²-ax+b is dimension divided by (x-1) and (x+1) it leave the remainder 5 and 19 respectively find a and b
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Answer 1

Step-by-step explanation:

f(1) is 1-2+3-a+b=0

-a+b= -2

f(-1)=1+2+3+a+b=0

=a+b=. -6

a = -b -6

now b+6+b =-2

2b= -8

b= -4

a= -2

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