Question

if X equals to 4 is a zero of the polynomial P of X is equals to 4 x ^2 - 5 x + 3 find k​

Answer 1

Explanation:

Explanation:

The Given Polynomial is p(x) = 4x²-5k+3

Substituting the given value of x in Polynomial;

P(x) = 4x²-5k+3

P(x) = 4x²-5k+3

P(4) = 4(4)² - 5k + 3

P(x) = 4x²-5k+3

P(4) = 4(4)² - 5k + 3

P(4) = 4(16) - 5k + 3

P(x) = 4x²-5k+3

P(4) = 4(4)² - 5k + 3

P(4) = 4(16) - 5k + 3

0 = 64 - 5k + 3

0 = 64 - 5k + 3

0 = 67 - 5k

k = 67/5