What is the product? (2 x minus 1)(x + 4) 2 x squared minus 4 2 x squared + 4 2 x squared + 7 x minus 4 2 x squared minus 7 x minus 4

Question

asked Sep 17, 2020 92.5k views

2 Answers

Alexandr · Answer 1 · 2020-09-19T17:39:22+0000

For this case we must find the following expression:

(2x-1) (x + 4)

Applying distributive property term to term we have:

$(2x) (x) + (2x) (4) - (1) (x) - (1) (4) =\\2x ^ 2 + 8x-x-4 =$

Simplifying similar terms:

2x ^ 2 + 7x-4

Answer:

2 x squared + 7 x minus 4

Option C

Davidshinn · Answer 2 · 2020-09-22T18:08:51+0000

Answer:

option 3 -
(2x-1)(x+4)=2x^2+7x-4

Explanation:

Given : Expression (2 x minus 1)(x + 4) is
(2x-1)(x+4)

To find : What is the product ?

Solution :

Expression
(2x-1)(x+4)

Multiply term by term,

(2x-1)(x+4)=2x* x+2x* 4-1* x-1* 4

(2x-1)(x+4)=2x^2+8x-x-4

(2x-1)(x+4)=2x^2+7x-4

Therefore, Option 3 is correct.