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Grade: 10

                        

p(x)=x4+5x3+4x2-3x+9=(x-k)2(ax2+bx+c) where k is an integer and a,b,c are constants find the value of 5a-7b+8c

6 years ago

Answers : (1)

Sher Mohammad
IIT Delhi
askIITians Faculty
174 Points
							for x=0 . 9=-2kc, let c=3/2 imply k=-3 
x=1 16=(1-k)2(a+b+c)
16=4*2(a+b+c)
a+b+c=2
a+b= .5
for x=-1
12= 2*2(a-b+c)
a-b=3-1.5=1.5
_ a=1
b=-.5
6 years ago
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