Factorise x^2 + 5x + 6
We are trying to get to the form of x2 + 5x + 6 = ( x + a)(x + b)6 must also factorise as 6x1 or 3x2 Let's focus first on the x terms : 5x is the sum of ax + dbx and the coefficient of these two must be factor of 6 to have ab = 632 = 6, 3+2 = 5=> x2 + 5x + 6 = ( x + 3)(x + 2)
MG
Related Maths GCSE answers
All answers ▸Functions question: f(x) = 3x + 2a; g(x) = ax + 6; fg(x) = 12x + b. a and b are constants; Work out the value of b
Find the roots for the quadratic equation x^2 +2x-3 = 0
A linear sequence starts: a+2b, a+6b, a+10b, ..., ... The 2nd term has a value of 8. The 5th term has a value of 44. Work out the values of a and b.
Describe and explain three adaptations of succulent plants that allow them to live in hot and dry conditions.