Solve the equation using square roots: 2x^2 - 17 = 15

2x^2 - 17 = 15

add 17 on both side

2x^2 = 32

divide both sides by 2

x^2 = 16

take the square root of both sides

x = sqrt (16)

x = +-4

-4,4

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

the answer is 489

step-by-step explanation: