y = x^2 + 3x + 2 = 0
Factorising gives: y = (x+2)(x+1) = 0. y only equals 0 when (x+2)=0 or (x+1)=0. Therefore x=-2 or x=-1
DT
Related Maths 11 Plus answers
All answers ▸How many thirds are there in 9?
Below
The average temperature in May is 18 ºC. The average temperature in November is a third of the average temperature in May. The average temperature in September is twice the average temperature in November. What is the average temperature in September?
which of these angles is obtuse?