if -1 is zero of the polynomial p x is equal to a x cube minus x square + X + 4 then find the value of a
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Answered by
16
The answer will be 1. In order to find the answer place the value of zero that is (- 1) in the given equation
Hope this will help you
siva315:
how will u get -1......on putting -1 in the equation I'll get a=2
Answered by
36
p(x)=ax³-x²+x+1
-1 is a zero of polynomial
put -1 in p(x)
a(-1)³-(-1)²-1+4=0
-a-1-1+4=0
a=2
-1 is a zero of polynomial
put -1 in p(x)
a(-1)³-(-1)²-1+4=0
-a-1-1+4=0
a=2
I hope this will help uuu
where is sign of - before a
a is taken to rhs....
it changes to positive
hey a=2.....typing mistake
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