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# Helppp how to solve x=5√(x) - 6 watch

1. x=5√(x) - 6

i know you take 6 to the other side then what

2. (Original post by monisj1)
x=5√(x) - 6

i know you take 6 to the other side then what

Perhaps make the substitution .
3. square both sides (you might need to check all solutions in your original equation as squaring can introduce extraneous solutions)
4. (Original post by monisj1)
x=5√(x) - 6

i know you take 6 to the other side then what

5. (Original post by Arithmeticae)
square both sides (you might need to check all solutions in your original equation as squaring can introduce extraneous solutions)

could you explain further with the question I'm zoo confused
6. (Original post by TenOfThem)

could you explain further with the question I'm zoo confused
7. (Original post by keromedic)
Perhaps make the substitution .
could you explain further with the question I'm zoo confused
8. (Original post by monisj1)
could you explain further with the question I'm zoo confused

If this said could you solve it

Do you realise that
9. (Original post by TenOfThem)

If this said could you solve it

Do you realise that

so does y=x squared or square root of x
10. (Original post by monisj1)
so does y=x squared or square root of x
Look at your equation and mine

surely you can see what the y is replacing
11. (Original post by TenOfThem)
Look at your equation and mine

surely you can see what the y is replacing

oh my god it just clicked in my head thank you very much
12. (Original post by monisj1)
oh my god it just clicked in my head thank you very much
good
13. So how do you work it out?
14. (Original post by KittyRe-play)
So how do you work it out?
Do you know how to solve quadratics?
15. (Original post by KittyRe-play)
So how do you work it out?
After getting , you know what is to.
16. (Original post by KittyRe-play)
So how do you work it out?

basically my answer is x=9 and x=4
17. (Original post by TenOfThem)
Do you know how to solve quadratics?
Yes, but where is the y coming from?
18. (Original post by monisj1)
basically my answer is x=9 and x=4
How?
19. (Original post by KittyRe-play)
Yes, but where is the y coming from?
Nowhere

the equation is

The equation with y in is just one that looks like it - with the same coefficients

If you can solve one, then you can solve the other
20. (Original post by TenOfThem)
Nowhere

the equation is

The equation with y in is just one that looks like it - with the same coefficients

If you can solve one, then you can solve the other
So first I square the equation to get rid of the square root? That will give me x squared minus 25x plus 36?

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Updated: September 23, 2014
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