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4 votes
(Picture) MULTIPLYING MONOMIALS AND BINOMIALS

(Picture) MULTIPLYING MONOMIALS AND BINOMIALS-example-1

2 Answers

2 votes


15 {r}^(2) - 14r - 8
User RvdB
by
8.2k points
7 votes

Answer:

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

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.

User John Schulze
by
8.8k points

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