The following questions are all exam style questions based on the topic of solving quadratics. Although, only your final answer is tested in the quiz, you should write down your working on paper. An example worked answer is shown for each question at the end of the quiz.
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Solve the equation
x^2 -14x – 120 = 0
x =
Zhen is solving a quadratic equation using the formula. He inputs values and get:
What equation is he trying to solve? Give your answer in the form ax^2 + bx + c = 0
^2- – =0
Solve the equation x^2 – 20x = – 100
x=
The equation 2x^2 + 14x + 12 = 0 has been solved & sketched on a graph.
Which graph represents the correct answer?
A ball is thrown vertically upwards from a point P. The height above P of the ball, s seconds after it was thrown is h metres, where h = 11s – 5s^2 Work out the values of t when the height of the ball
above P is 5 metres.
Which two answers would be considered correct?