Question

Use the graph of y = x2 + 7x + 12 to find the solution.

Answer 1

if you graph you will see that it crosses the x axis at -3 and -4 so those are the solutions. it is easier just to write
\[x^2+7x+12=0\]
\[(x+3)(x+4)=0\]
\[x=-3,x=-4\]