Question

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

Answer 1

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:

`2x ^ 2 + 7x-4`

2 x squared + 7 x minus 4

Option C

Answer 2

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.