(picture) multiplying monomials and binomials

option D is correct, i.e. (5r+2)(3r-4) = 15r² -14r -8.

Step-by-step explanation:

Given is (5r+2)(3r-4)

Applying FOIL method:-

F- First two, O- Outer two, I- Inner two, L- Last two.

So, (5r+2)(3r-4) = 5r*3r +5r*-4 +2*3r +2*-4

(5r+2)(3r-4) = 15r² -20r +6r -8

(5r+2)(3r-4) = 15r² -14r -8

Hence, option D is correct, i.e. (5r+2)(3r-4) = 15r² -14r -8.

you need a common difference between consecutive terms to be constant, like 1,2,3,4 or 2,4,6,8, or 1,3,6,9

16.9 times 2.85

step-by-step explanation: