A homeowner wants to enlarge a rectangular closet that has an area of (x^2 + 9x + 20) ft2. The length is (x + 5) ft. After construction, the area will be (x2 + 14x + 48) ft2 with a length of (x + 6) ft.

4.08%

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 -