Search over 10,000 free study notes

5^x-3=7^2x+1

log₅5^x-3=log₅7^2x+1

x-3=(2x+1)log₅7

x-2xlog₅7=3+log₅7

x(1-2...

If you are given a simple quadratic equation, for example x²+6x+8=0, then in order to factorise this you must find two numbers that add together to make the coefficient of x in the e...

Question:

Line A has a gradient of 4 and passes through point (5,6).<...

Take this problem as an example: 

5 white socks and 3 black socks are in a drawer. Stefan takes out two socks at random. Work out the probability that Stefan takes out two socks of the same co...