Question

Find the value of A in given polynomials , P(x) = 5X^3 -2a + 5 if P(2) = 31​

Answer 1

Answer:

a = 7

Step-by-step explanation:

P(x) = 5X^3 -2a + 5

P(2) = 31​

p(2) = 5(2)³ - 2a + 5 = 31

5(8) - 2a + 5 = 31

40 - 2a + 5 = 31

45 - 2a = 31

-2a = 31 - 45

-2a = -14

2a = 14

a = 14/2

a = 7

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