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Please help !!!!!!
MULTIPLY (3x + 4)(4x + 5)

Please help !!!!!! MULTIPLY (3x + 4)(4x + 5)-example-1

2 Answers

4 votes

Answer:

B

Explanation:

You are going to want to use the FOIL method. First outer inner last. Multiply 3x*4x to get 12x^2 then multiply 3x*5 to get 15x then multiply 4*4x to get 16x and last multiply 4*5 to get 20. Since 15x and 16x are like terms we add them together to get 31x

User Louis Gerbarg
by
8.2k points
3 votes

Answer:

B. 12x^2 + 31x + 20

Explanation:

Use FOIL (First, Outer, Inner, Last)

(3x + 4)(4x + 5)

12x^2 + 15x +16x + 20

12x^2 + 31x + 20

User Haggra
by
8.5k points

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