2x^2 - 16x + 32
Solution: x=4. This can be shown by factorisation or applying the quadratic formula.
NO
Related Maths GCSE answers
All answers ▸Please expand the brackets in the following equation to get a quadratic equation. Then, please show using the quadratic formula that the solutions to the equation are x=3 and x=5. Here is the starting equation: (x-3)(x-5)=0
a) Solve 6x + 13 =2x +5 (2 marks) b) Expand and simplify (q + 7)(q - 3) (2 Marks)
Solve algebraically: 6a + b = 16 5a - 2b = 19
Solve the simultaneous equations: 4x+y=25 and x-3y=16