Question

what is the value of 6x^2 - 4x when x = 5?

105

130

70


40

Answer 1

Well we need to substitute x with 5 so lets input it....

\[6(5)^2 = 4(5)\]

so what would we do first? Makes sure to use PEMDAS.

Answer 2

meant to put minus not equal

Answer 3

i dont know how to do this at all...

Answer 4

i think its 130.

Answer 5

Well to solve this we must use a process called PEMDAS.

(P)aranthesis
(E)xponents
(M)ultiply
(D)ivide
(A)dd
(S)ubtract

and we do this from left to right like reading so what do you think we should do first according to the process?

Answer 6

Substitute the value of the variable into the equation and simplify, i figured it out...

Answer 7

130! Is Correct!