Question

Evaluate the expression below when x = 3.

5x^2 - 12
--------
x + 3

Answer 1

are we plugging in x for 3 for both numerator and denominator?

Answer 2

yes. it would be 5*3^2-12 over 3+3

Answer 3

well, solve it out.
33/6

Answer 4

which is 11/2

Answer 5

that would be 5.5 and i got to that part. but idk what 5.5 is as a fraction. thats where i got stuck.

Answer 6

i see now. thank you!

Answer 7

you can take your texas calculator (if you have one), put in 5.5 and forward it.

Answer 8

i only have a computer calculator here

Answer 9

it'll work the same. just google "5.5" and results should give you the fraction