i have (x-5)^2=((x-5)^2)1/2=(x-5) then i do [5, infinity) but the answer is wrong
Use multinomial theorem.
simplified form is x-5
u need domain ?
i have x-5 and for my domain answer i put...
or should it be...
why ?? why can x not be less than 5 ?
whats the domain of x-5 ?
what if x= 3 is that allowed value ?
note that x-5 does not place any restrictions on x
The simplified form is |x - 5|.
The domain of that should be all real numbers. x^2 - 10x + 25 is always positive, so you can input everything.
yes everything like -infinity to positive infinity
oh see i had the left with a bracket so that was wrong
Do you need the range as well?
after i had messed it up i just started guessing
let me see..
yeah i think so
OK, so the simplification is |x - 5|. Do you know what the range of any absolute value function is?
the range would be [5, positive ) right?
nopes, the range of |x| is x>=0