Search over 10,000 free study notes

x²+8x +15 = 0
(x+4)²-16 +15=0
(x+4)²-1=0
(x+4)= (+/-)1

x = -3 or -5

The easiest way to do this is to first work out the area of the whole circle. To work out the area of a circle, the equation is area = πr² , w...

To complete this task we use a method called "Completing the square. For this we use a formula (a+b)^2=a^2+2ab+b^2.
Now we see that in the example we have a term x^2 so we put x^2=a^2 so we can ...

P=(3a+5)/(4-a)First of all we need Get rid of the denominator, we do this by multiplying both sides by (4-a)This leaves P(4-a)=3a+5 (as any term multiplied by the denominator leaves only the numerator)Th...

t = (v - u) / a