Question

1. Solve by factoring or finding square roots.x2 - 6x-7-01,6-7,1-1, -6O7,-1

Answer 1

The equation:

$x^2-6x-7=0$

can be factor as follows:

$(x-7)(x+1)=0$

this implies that:

$\begin{gathered} x-7=0 \\ x=7 \\ \text{or} \\ x+1=0 \\ x=-1 \end{gathered}$

Therefore the solutions to the equation are 7 and -1; and the asnwer is the last option.