times the bottom and top of the fraction by root 2
what do I do after that?:/
Do that, then bring all x's to one side and factorise, then divide by the bracket for your solution. For simplification sake remember then x8=2x2 as another method and then divide by the coefficient given to your whole x term
Note that (xa)b=xab From this you can use your power to simplify them to ^3 and ^-3 Furthermore, set f(x)=5 then subtract 5 as it is on the end just leaving your x term accordingly, now you have a standard equation Solve it. (you may have to use inverse powers tell me when you get here)
Note that (xa)b=xab From this you can use your power to simplify them to ^3 and ^-3 Furthermore, set f(x)=5 then subtract 5 as it is on the end just leaving your x term accordingly, now you have a standard equation Solve it. (you may have to use inverse powers tell me when you get here)
i am up to (2x)^3=(3x)^-3
btw you are class at maths robbie... are your teachers not gutted you proved them wrong?:P
btw you are class at maths robbie... are your teachers not gutted you proved them wrong?:P
Ok now this is how I'd do it this may seem a bit weird but its what I do 2x3=x33 from this we notice that x^3 works well here, from this we can assert that 2x^6=3 therefore x6=23 I am going to put my method here as well to see if it works though, by substituion let x3=k2k=3/k-> 2k2=3 k^2=3/2 so
Unparseable latex formula:
k=\sqrt \frac{3}{2}}
Don't forget plus or minus, similarly this means its true.
so solve x6=23 and I think you get the right answer. They aren't they're quite happy to see were topping league tables; selfish bastards
Ok now this is how I'd do it this may seem a bit weird but its what I do 2x3=x33 from this we notice that x^3 works well here, from this we can assert that 2x^6=3 therefore x6=23 I am going to put my method here as well to see if it works though, by substituion let x3=k2k=3/k-> 2k2=3 k^2=3/2 so
Unparseable latex formula:
k=\sqrt \frac{3}{2}}
Don't forget plus or minus, similarly this means its true.
so solve x6=23 and I think you get the right answer. They aren't they're quite happy to see were topping league tables; selfish bastards
so we just take the 6th root of 3/2 ? how on earth we do that without a calculator?