Determine where f(x) intersects the x-axis.
f(x)=x^2+9x+18
Hallo guest
Determine where f(x) intersects the x-axis ( f(x) = 0 ).
\(\begin{array}{rcl} &x^2+9x+18 &=& 0\\ \text{Factorisation }& (x+3)(x+6) &=& 0\\ &x_1 &=& -3\\ &x_2 &=& -6 \end{array}\)
