Question

If P(x) = x
^2
+7x-9 ,find the value of p(2)+ p(-1)​

Answer 1

Answer:

Given that p(x)=5x

3

−3x

2

+7x−9

(i) p(−1)=5(−1)

3

−3(−1)

2

+7(−1)−9=−5−3−7−9

∴p(−1)=−24

(ii) p(2)=5(2)

3

−3(2)

2

+7(2)−9=40−12+14−9

∴p(2)=3