Help with these 3 problems :( Multiplying Monomials

[PreddieCockey]

I'm really lost, I tried, but it doesn't seem correct at all , can someone please help?

1.) r³q4(3r²q-4rq³) ** note : the 4 IN FRONT OF the parentheses suppose to be an exponent**

2.) 8h(5-23h²)-9h²(17h-2)

3.) (3c-13m)(6c+7m)

 

[Deleted member 4993]

In Denis's reply above, the ^ sign means exponent, i.e.

a^n ≡ aⁿ

or

a^3 ≡ a³

 

[BobbyJones]

Hey,

1 ) 3r^5 q^5 - 4r^4 q^7

2) -h(337h^2 -18^h - 40)

3) 18c^2 -57mc - 91m^2


Hope this helps!