Answer:
top equation is equivalent to A
middle equation is equivalent to C
bottom equation is equivalent to B
Step-by-step explanation:
idrk how to explain it without going into detail (like every little detail) so int the top one the -[tex]7^{2}[/tex] comes from the [tex]3^{2}-10^{2}[/tex] (because its [tex]3^{2} -10^2[/tex] and the answer it [tex]-7^{2}[/tex]) and just do the same for the rest.
