Write x^2 - 6x +7 in the form (x+a)^2 +b
Follow standard procedure that can be taught on a whiteboard. In general:ax^2 + bx + c = (x+b/2)^2 - (b/2)^2 + csox^2 - 6x + 7 = (x-3)^2 - (9) + 7= (x-3)^2 - 2
JC
Related Maths GCSE answers
All answers ▸Solve n^2 – n – 90 = 0 to find value of n
Solve the following quadratic equation.
The probability that it rains on a given day is 0.15. The probability that a football match is cancelled when it rains is 0.65. If it doesn't rain, the probability that the match is not cancelled is 0.95. What is the chance that the match is cancelled?
How do I solve simultaneous equations by substitution?