Question

x² + 9 x + 18 factorise The given question
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Answer 1

Step-by-step explanation:

x^2+6x+3x+18

x(x+6)+3(x+6)

(x+3)(x+6)=0

x=-3,-6

Answer 2

Answer:

x² + 9x + 18

= x² + 6x + 3x + 18

= x(x + 6) + 3(x + 6)

= (x + 3)(x + 6)

Step-by-step explanation:

To factorize any equation, we to have firstly see the middle term i.e 9x in ours.

What we have to do is that the addition/subtraction of any two terms should be equal to the middle one and their multiplication should be equal to the multiplication of other 2 terms in the equation.

just like :

18x² = 6x * 3x

and 9x = 6x + 3x.

∴ we got (x +3)(x + 6)