Which of the given expressions results in 0 when evaluated at x = 5? a. 5x(x − 7) b. (x + 7)(x − 2) c. (x + 5)(x − 8) d. (x − 8)(x − 5)

Option D

Step-by-step explanation:

The expressions are given in factor form.

Whenever any one factor is 0, expression is 0

Since x=5 we have x-5 =0

So wherever x-5 is a factor, the expressions has to be 0

Out of 4 expressions given we have

Option D is only having x-5 as factor

Hence option D expression

when x=5

Other expressions cannot be exactly 0 since x-5 is not a factor for any other of them

So only option D is right.

about 168 miles

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -