Q. 74.2( 10 Votes )

Find the value of

Answer :

let p(x) = 3π‘₯3 – 4π‘₯2 + 7π‘₯ – 5


Putting x= 3 in given polynomial p(x)


P(3) = 3 Γ— 33 – 4 Γ— 32 + 7 Γ— 3 – 5 = 61


Similarly p( – 3) = 3 Γ— – 33 – 4 Γ— ( – 3)2 + 7 Γ— ( – 3) – 5 = – 143


The value of given polynomial at x= 3 and – 3 is 61 and – 143 respectively.


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