Question

Which of the following expressions results in 0 when evaluated at x = 4?

A).(x - 10)(x - 4)
B).(x + 4)(x - 10)
C).4x(x - 6)
D).(x + 6)(x - 2)

Answer 1

A).(x - 10) X (x - 4)
(4 - 10) X (4 - 4)
6 X 0 = 0

Answer 2

option A

Explanation:

find the following expressions results in 0 when evaluated at x = 4

we plug in 4 for x and see which expression gives us answer 0

A)
`(x - 10)(x - 4)`

`(4 - 10)(4 - 4)=0`

B)
`(x + 4)(x - 10)`

`(4 + 4)(4 - 10)=-48`

C)
`4x(x - 6)`

`4(4)(4 - 6)=-32`

D)
`(x + 6)(x - 2)`

`(4 + 6)(4 - 2)=20`