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x= -3 and 1y= 7 and 11

1)Multiply out the right hand side to give a common denominator: a= (Cf+de)/df2) Cross multiply to get rid of the denominator fda = cf + de3) bring all terms containing f to the same side and factorise fd...

To begin with we need to understand what a percentage is. It is simply a proportional that shows a number as parts of a hundred. So 30% is the same as saying 30/100 which can be simplified by dividing the...

We know the area of any triangle is equal to 0.5abSin(C). This means we need to find the length of side b and the angle C.First we can work out the angle C of the triangle as we know the angles in a trian...

1. Replace y with x + 3. x^2 + 2(x+3) = 9
   2) Expand the bracket, and subtract 9. x^2 + 2x - 3 = 0
   3) Factorise the quadratic(x - 1)(x + 3) = 0
   4) Therefore, x has 2 solutions. x = 1 and ...