Question

6 Evaluate 5x2 − 4 when x = 3.

Answer 1

if its supposed to be squared then the answer is 221

if it is not supposed to be squared then the answer is 26

Explanation:

if that is 5x^2 then it would be 5x3 which equal 15 then we would just square it which would be 225 and subtract 4 so if it is squared then the answer is 221

if it is not squared then it would be 5x3=15 15x2=30 30-4=26

hope this helps (:

Answer 2

when x=3

5x2 − 4=5×3²-4=41 is your answer