Question

If f(x) = ax²+bx+2 & f(1) = 3 & f (4) = 42 Find a&b​

Answer 1

Substitute x=1 to get first equation and then put x as 4. Now we have two equations with 2 variables. After solving, a=3 and b =-2

Answer 2

Answer:

a = 3, b= -2

Step-by-step explanation:

Let x equal to 1 in the equation:

3= a+b+2

a+b=1 -----(equation 1)

LetbX equal to 4:

42= 16a+ 4b +2

4a+b =10 -------(Equation 2)

by solving equation one and two:

a is 3 and b is -2

hope this helped you!

thank you