x= -7 or 6
Work Step by Step
Factor the trinomial. x$^2$+x-42=0 (x+7)(x-6)=0 Set each variable factor as equal to zero and then isolate the variable to find the solutions. x+7=0 or x-6=0 x=-7 or x=6 Enter the original equation into your graphing utility to observe that the graph crosses the x-axis at -7 and 6.