Algebra 1 STAAR Quadratics: Products and Factoring

Which expression is equivalent to  $35m^2-63$

•  $7\left(5m^2-9\right)$ 

•  $-7\left(5m^2+9\right)$

•  $7m\left(5m-9\right)$

•  $-7m\left(5m-9\right)$