Plot the graph, y=2x^2 -7x +4
3 Mehods:Step 1: Does the function factorise. In this case yes it does. giving y=(2x+1)(x-4)Method: Find the factors of the contract in this case (4). Which are (2,2) , (4,1)We know that a quadratic must factorise into 2 brackets (2x+/- Contant) (x+/-contant) Trial and error to find exact values. Then equalise each bracket to 0 and plot graph going through -0.5 and 4 on the x-axis. U-shape
TW
Related Maths GCSE answers
All answers ▸ABC and BCD are two attached triangles, attached along line BC. AB = 5.8cm, AC=5.2cm, BD=4.3cm. Angle BDC = 30 degrees, and angle DCB is a right angle. Calculate angle CBA.
Solve 7(k-3)=3k-5
A rectangle has the side lengths root6m and root3m, what is the area of the rectangle in its simplest form.
how do i factorise a quadratic equation when the coefficient of x^2 is not 1?