## anonymous one year ago x^2>36

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1. anonymous

check all that apply A.0 B. 6 C. 7 D. -15 F. -6 D. -3

2. UsukiDoll

$x^2 > 36$ well I'm not giving direct answers because that's against code of conduct... but all you have to do is to square root both sides $\sqrt{x^2}>\sqrt{36}$ then take the square root of x^2 and 36

3. anonymous

okay

4. anonymous

okay

5. UsukiDoll

we need an x... we can't leave it like that... what's the square root of x^2?

6. UsukiDoll

|dw:1437632210874:dw| I just re-wrote it to exponential form to make it a bit easier to see what is 2 divided by 2 ?

7. anonymous

The definition of $x^2= \pm \sqrt{x}$

8. anonymous

so if $X^2 ={25}$ then $x=\pm \sqrt{25} = x=\pm5$

9. anonymous

How wan you solve this now? x^2>36

10. anonymous

so far your work is corret

11. anonymous

12. UsukiDoll

:)

13. anonymous

lol

14. anonymous

did she or he find the answer

15. UsukiDoll

no not yet. the user is offline at the moment.

16. anonymous

oh

17. anonymous

i'll wait

18. anonymous

isn't the answer c &d ..... since the absolute value has to be bigger than 6

19. UsukiDoll

no. this is an inequality absolute value doesn't come into play here.

20. BGrg007

just take every answer choice and and square it and see if it is greater than 36.

21. UsukiDoll

this is solving an inequality. solving an inequality and solving an equation is the same thing. What throws people off for solving inequalities is the $<, >, \geq ,\leq$ symbols We were given $x^2 > 36$ It's the same as solving an equation like this $x^2=36$