Question

the width of the bedroom floor is 5m less than its length and it's area is 84m².find the dimensions


help me pls....​

Answer 1

Answer:

84m² = x (x - 5m)

Now that we already know the length, we can now find the width.

Final Answer: The length is 12m and the width is 7m.

Step-by-step explanation:

x(x-5) = 84m²

x²-5x = 84m²

x²-5x-84 = 0

Solve the equation,we have,

x=12 and x=−7

taking x=12 , we have

L= 12 and B = 12−5 = 7

Perimeter = 2(L+B)

= 2(12+7)

= 2(19)

= 38m

Hope it helps !!

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