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since f(x)=0 write

9x²-4=0

move the x's to one side and the numbers to the other.

so 9x²=4

then to get rid of the 9 divide ...

In order to differentiate this expression, you need to use the chain rule. 

The chain rule gives: f'(x) = uv' + u'v.

The u and the v are two parts of the o...

firsly sketch out the 2-2i on an argand diagrm and draw a line from (0,0) to (2,-2). With the shortest distance Mark the angle theta from the positive x-axis to the line to see whether the argument is ...

For most religions, there is a Supreme being that created the universe. According to Christian belief, the universe and the species therein was created in six days. However, with Darwin and his theory ...

Evil is a problem because of how various religions present their God. For Christians, God is a merciful and just God who repays the righteous and punishes the wrong doers. However, in the context of th...