Hello ,
I need some king person to show me how to finish off my question,
in the picture attached the correct answer is in green in the bottom corner, I cant seem to get it?
Please
Did you apply the distributive law when you multiplied the first equation.
4*(1-x^2)^(1/2) + 2*x(1-x^2)^(-1/2)*(-2*x)
Then, your common denominator was correct. But you would end up with this,
numerator: (4*(1-x^2) - 4*x^2)
denominator: ((1-x^2)^(1/2))
I don't know how to do all the code, but if you apply the distributive law you should end up with what is in green; if unclear let me know.
The distributive law is like this.
say we have x(y + z)
then, x(y+z) = xy + xz and if it were like this (y + z)x = yx + zx.
So, an example would be like this....say we have the following:
2(x-4) = 2x - 8. What you are doing is you are taking the 2 and multiplying each of the elements in parentheses by it.
Another example:
3(y + 8) = 3y + 24
5(z - 3) = ? (Think about this one)
You did put it in the denominator. But remember what you put in the denominator
(1-x^2)^(1/2)...
.Once that is in the denominator, in order to create like denominators for everything you have to multiply the other term by (1-x^2)^1/2 and when you multiply it by the other one, you'll end up with (1-x^2)....
remember (1/2) + 5...in order to add these, we need like denominators so we multiply the 5 by 2 and put that over 2. which will yield (1/2) + (10/2)....