Question

find value of b in 3x^2+bx+15 at x=1/3​

Answer 1

Answer:

b= -16

Step-by-step explanation:

p(x)=3x²+bx+15

substitute x=1/3

0=3(1/3)²+b/3+15/3

0=3(1/9)+b/3+15/3

0=1/3+b/3+15/3

0=1+b+15/3

0=16+b

b= -16