The length of a rectangular garden is 7 m greater than the width. the area is 78m^2. what are the dimensions for length and width?

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Answer 1 · 2016-08-07T04:21:37

$"Width"=6m " Length"=(6+7)=13m$

Let $"Width"=x m " Length"=(x+7)m$

So by the area

$(x+7)*x=78$

$=>x^2+7x-78=0$

$=>x^2+13x-6x-78=0$

$=>x(x+13)-6(x+13)=0$

$=>(x+13)(x-6)=0$

$:.x=6$ negative solution meanigless.

$"Width"=6m " Length"=(6+7)=13m$