Question

-0.1x^2+10=0

find the x

Answer 1

x = ±10

Explanation:

1) Subtract 10 from both sides.

`-0.1 * x^2=-10`

2) Divide both sides by -0.1.

`x^2=(-10)/(-0.1)`

3) Simplify
`(-10)/(-0.1)` to 100.

`x^2=100`

4) Take the square root of both sides.

`x=\pm √(100)`

5) Since 10 * 10 is 100, the square root of 100 is 10.

`x=\pm10`

Answer 2

x = 10 and x = -10.