2x=sqrt10+3x

Question

2x=sqrt10+3x

anonymous · Answer

tell me the first step and i'll work the whole problem by myself.
The answer is x=2 but i keep getting x=10
here's what i did
i hired the powers first
(2x)^2=(sqrt10+3x)^2
but if i do this method first, the answer is x=10

undeadknight26 · Answer

are you sure its x = 2?

undeadknight26 · Answer

you are sure its not x = -sqrt10

anonymous · Answer

yeah, that's what it says at the back of the text-book

anonymous · Answer

let me double check, hold on

anonymous · Answer

yup it's 2 :/

undeadknight26 · Answer

maybe you combince like terms i have no idea srry...

anonymous · Answer

ok, thanks for trying :)

undeadknight26 · Answer

@amistre64 @shrutipande9 @helppls123 didn't want to bother you but can you help this person?

anonymous · Answer

@campbell_st

campbell_st · Answer

is the question 

1. $$2x = \sqrt{10} + 3x$$

or 

2. 

$$2x = \sqrt{10 + 3x}$$

anonymous · Answer

the second one :)

campbell_st · Answer

ok square both sides

$$4x^2 = 10 + 3x$$

rewrite the equation and its

$$4x^2 -3x -10 = 0$$

just solve the quadratic, and it can be factored.

anonymous · Answer

that's what i got, so all have to do do is plug in the quadratic formula and that's it?

anonymous · Answer

wait, how come 2x became 4x^2 should it be 4x and since it's already squared?

anonymous · Answer

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