Question

find the value of f(x) if f(x) = 3x2 - 21x+4​

Answer 1

Answer:

f(x)=2x

2

−x+4

f(3)=2(3)

2

−3+4

f(3)=2(9)−3+4

f(3)=18−3+4=19

Answer 2

Put this value in (1), we get

⇒L=

3

53