## anonymous one year ago X to the power of 2=196 please explain

1. tkhunny

Explain what? Solve like any other quadratic equation.

2. anonymous

X to the power of 2=196

3. anonymous

It says find the equation for x

4. tkhunny

That makes no sense. You are given the equation. Perhaps find the solutions?

5. anonymous

Idk this is tooooo confusing

6. tkhunny

It's just a quadratic equation. Have you solved any of those?

7. anonymous

8. anonymous

And no

9. tkhunny

Yup. Solve the equation for x. You are given the equation. Your task is to find a value for x that satisfies the equation. 1^2 = 1 2^2 = 4 3^2 = 9 4^2 = 16 5^2 = 25 6^2 = 36 ... 10^2 = 100 ... 15^2 = 225 Are we getting close?

10. anonymous

Umm ain't 225 higher then 196

11. tkhunny

Exactly. So,I must have missed it. Can you find the right value?

12. anonymous

Ohh so it would be 14 to the power of 2 right

13. tkhunny

Done. Move on to the next one.

14. anonymous

Oh ok that all I have to do

15. UnkleRhaukus

16. UnkleRhaukus

$x^2=196\\ x\times x = 196\\ x = \pm\sqrt{196}$

17. tkhunny

It seemed to me that we were not worried about that other solution, based on the visual observation of the problem statement. We certainly aren't going to expect a student at this level to find all three solutions to the next problem.