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Firstly, get both fractions to the same demonimator 3/4 X 5/5 = 15/20.   2/5 X 4/4 = 8/20

This makes the question become (15/20 + 8/20)² 

15/20 + 8/20 = 23/20

Therefore (23...

Calcium carbonate undergoes thermal decomposition to form calcium oxide and carbon dioxide.

Calcium Oxide (CaO) can undergo an exothermique réaction with water to product Calcium Hydroxide, also kn...

The gradient of a straight line is the number before the x if it is in the form y=mx+c. So for y=6x+2 the gradient is 6. If the y has a factor, like 2y=6x+2, then you have to divide everything by the fact...

(using diagram of synapse between relay and motor neurone)

This is the relay neurone and this is the motor neurone, the gap in between the neurones is called the synapse. Information is passed from...

FIrst of all we need to understand how cos 30° and tan 60° are found. Let's think of an equilateral triangle, all three angles of the triangle are equal and 60° and each side has length 2. Let's half the ...