RoseCrystal01
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Please help!!! Having some trouble with this! Tom, Jim, and Matt want to build a castle next to their swing set. The castle is as wide as the swing set, and 6 feet long. The additional play area is enlarged to yield the following layout:|

Please help Having some trouble with this Tom Jim and Matt want to build a castle next to their swing set The castle is as wide as the swing set and 6 feet long class=
Please help Having some trouble with this Tom Jim and Matt want to build a castle next to their swing set The castle is as wide as the swing set and 6 feet long class=

Respuesta :

DavidCopperfield

Length = 7 + 2x [L]

Breadth = 6 + x [B]

So, Area = L × B

=> Area = (7 + 2x) (6 + x)

=> Area = 7 × 6 + 7x + 2x × 6 + 2x²

=> Area = 42 + 7x + 12x + 2x²

=> Area = 2x² + 19x + 42

Option B is correct.

Any questions, you may ask.

fieryanswererft

Answer: b.) 2x² + 19x + 42

Area of rectangle:

⇒ Length × Width

⇒ (6 + x) × (7 + 2x)

  • apply distributive method: (a + b)(c + d) = ac + ad + bc + bd

⇒ 6(7) + 6(2x) + x(7) + x(2x)

simplify

⇒ 42 + 12x + 7x + 2x²

arrange

⇒ 2x² + 19x + 42

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