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30. Find the value of A in P(x) = Ax3 – 2x + 3 so that P(2) = 15.
B. 2
C. 3
A. 1​

Sagot :

Rimurutheslimegreatsid

Answer:

B. 2

Step-by-step explanation:

P(x) = Ax^3 – 2x +3

P(2) = Ax^3 – 2x +3, where x= 2, and P(2) = 15

15 = A(2)^3 - 2(2) +3

15 = 8A - 4+3

15 = 8A-1

_16_ = _8A_

  8          8

A= 2