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You need to use Pythagoras's theorem which states that for any right angled triangle, a²+b²=c² , where c is the hypotenuse and a and b are the other 2 sides of the triangl...

The index is 2/3 so first of all we can separate this and begin by looking at the 1/3. Fractions as indices mean that you must root the number, in this case we must cube root it because of the 3 in the de...

In differentiation, your goal is to reduce the power of the terms that you're differentiating with respect to (in this case, x).The method for doing this is:Multiply the power of your x term by its coeffi...

We’ve got to remember that expand means to multiply out, so that word is really important because it tells us what operation to use. The order we multiply in can be remembered using the word FOILS, which ...

2¹⁴ ÷ (2⁹)² = 2¹⁴ ÷ 2¹⁸ = 2^-4 = 1/(2⁴) = 1/16
(9x2=18) (14-18=-4) ...