Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-? +2
a)2
b)3
c)-9
d)7
e)4

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: