Quadratics
Quadratics questions that require a calculator
1
Solve the equation 2x² – 7x – 3 = 0
Give your answers correct to 2 decimal places.
2 Marks
Show Answer
x = 3.89, x = – 0.39
2
The graph of y = 2x² – 5x – 3 meets the graph of y = 8 – x at points A and B
Determine the x coordinates of A and B
Give your answers correct to 2 decimal places
5 Marks
Show Answer
x = 3.55, x = – 1.55
3
Solve the equation 3x² – 7x – 3 = 3x – 1
Give your answers correct to 2 decimal places.
4 Marks
Show Answer
x = 3.52, x = – 0.19
4
Solve the equation 3x² – 5x – 7 = 0
Give your answers correct to 2 decimal places.
3 Marks
5
Solve the equation 3x² + 5x – 7 = 0
Give your answers correct to 1 decimal place.
3 Marks
Show Answer
x = 0.9, x = – 2.6
6
Solve the equation 2x² –7x + 4 = 0
Give your answers correct to 1 decimal place.
3 Marks
Show Answer
x = 0.7, x = 2.8
7
Solve the equation 4x² +5x – 3 = 0
Give your answers correct to 1 decimal place.
3 Marks
Show Answer
x = 0.4, x = –2.7
8
Solve the equation 2x² – 3x – 8 = 0
Give your answers correct to 1 decimal place.
3 Marks
Show Answer
x = 2.9, x = –1.4
9
Solve the equation 4x² – 9x – 8 = 0
Give your answers correct to 1 decimal place.
3 Marks
Show Answer
x = –0.7, x =2.9