Question

Evaluate the expression below when x = 9.

3x + 2x2 - 9

Answer 1

it depends. if its 3*9+2*9*2-9 or 3*9+2*2-9. Either way just replace x in the problem with 9 and solve.

Answer 2

3x = 2x^2 - 9

Answer 3

alright so then calculate each side. 3*9=? and 2*9^2-9=? if the ? are the same than it checks.

Answer 4

i did it but idk if i did it right

Answer 5

3*9=27, 9^2=81 so 2*81-9=153

Answer 6

I second that ^answer^

Answer 7

thats what i got

Answer 8

but thats not a option

Answer 9

Is it x^2 or just 2x2?

Answer 10

If it is x^2 then I get 180 but if it is 2x2 I get 54. either one of those possible answers?

Answer 11

they are both an option

Answer 12

So does the equation of x raised to the second power or simply times 2? I dont know unless I see the original paper that the problem was printed on

Answer 13

It's online

Answer 14

Evaluate the expression below when x = 9.

3x + 2x2 - 9