[tex] 21m(10-6m)=\\ 21m*10-21m*6m=\\ 210m-126m^2=\\ -126m^2+210m [/tex]
The last two steps are just me reordering it so it's in standard form.
Hello.
Remember, the Distributive Property states the following:
a(b+c)=ab+ac
So we multiply all terms in the polynomial by the common term.
Multiply:
21m(10-6m)
210m-126m²
Remember, m×m=m²
Hope everything is clear.
Let me know if you have any questions!
#KeepLearning :-)
