At whats points does the graph of (t^2)+8t+7 intersect the x axis
Explain to the students what a one to many functions is which in this case is a quadratic, giving them an understanding of why there are two solutions, aided with the image of the quadratic.
Followed by explaining how to solve the quadratic and obtaining the values of x. In this case showing the fastest method of factorising, however, also explained the quadratic formula for cases that they cannot be factorised
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Related Maths GCSE answers
All answers ▸The equation of the line L1 is y = 3x – 2 The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel.
Alex wants to buy a new phone. It costs £280. Alex’s weekly wage is £420. He saves 15% of his wage each week. How many weeks does it take Alex to save enough money to buy the phone?
Express 4/(2-√2) in the form a+b√2 and write down the values of a and b.
Solve algebraically the simultaneous equations, giving your answers in terms of b : 3x+by=5, x-y=-2