Question

If p(x)=2x3-x2-4 then find p(2) and p(-1).​

Answer 1

Answer:

p(x)=2x3−3x2+4x−2

Put x=−1

So, p(−1)=2(−1)3−3(−1)2+4(−1)−2

or,  p(−1)=−2−3−4−2=−11

So, option B is correct.

Answer 2

Step-by-step explanation:

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put p(2) = 2×3-2²-4

6-4-4

6-8

-2

Put p (-1)= 2×3-x²-4

6-(-1)²-4

6-1+4

5+4

9

1) -2

2) 9