Question

yes can please help me

Answer 1

$\begin{gathered} x^2-14x+45=0\rightarrow x^2-14x+49-4=0 \\ (x-7)^2=4\rightarrow x-7=2\lor x-7=-2\rightarrow \\ x=7+2=9\lor x=7-2=5 \end{gathered}$

so the first blank space is:

$(x-7)^2=4$

and the asnwers are 9 and 5