Hey There.
Hope your well.
2(−3x)(−4x+x−7)
=(2(−3x))(−4x+x+−7)
=(2(−3x))(−4x)+(2(−3x))(x)+(2(−3x))(−7)
=24x^2−6x^2+42x
=18x^2+42x
Hope this helps,
Azumayay
