Does
2x(7+3x) [I have put "x" in bold to make it clearer that it is not x)
equal
2x x 7 + 2x x 3x
and then equal
14x + 6x2 [ie 6xsquared)
And does
6x + 12x2 [ie 12xsquared]
equal
6x x 1 + 6x + 2x
and then equal
6x(1 + 2x)
Thank you!
(If you could explain why that would be amazing!)