Search over 10,000 free study notes

Because of the signs within the equation we know that the factorised solution will be in the form (x+?)(x-?)The two numbers in the brackets have a product of -3 and the sum of -2.In this case, the numbers...

At the points of intersection the x and y coordinates will be the same. So we can solve the equations simultaneously to see what solutions to x and y solve both equations.Rearrange the second equation to ...

The question comes from the quadratic equation r = (-b +- sqrt(b² - 4ac)/2a where r is the root or x coordinate where the line crosses the x-axsis (the y coo...

Solve by substitution:5x + y = 22 (1)2x + y = 10 (2)
First let us label the equations 1 and 2. In order to solve this set of equations we need to rearrange one of the equations so that we have...

8x + 9 > 1 + 4x . Bring all x values to the Left hand side by subtracting 4x from each side. 8x -4x +9 >1 = 4x +9 >1 Bring all numbers to the right hand side by ...