B) Solve x + 5x + 6 = 0

x + 5x + 6

x + 3x + 2x + 6

x (1 + 3) + 2 (x + 3)

(x + 3) (x+2) = 0

x = - 3 (or) x = - 2

Step-by-step explanation:

The solutions are

x=2, x=3

Explanation:

x2-5x+6=0

Here we can first factorise the expression and then find the solution:

Factorising by splitting middle term

x2-2x-3x+6=0x (x-2) - 3 (x-2) = 0 (x-2) (x-3) = 0

Equating the two factors with zero to obtain solutions:

x-2=0, x=2x-3=0, x=3