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question !! = the lenght of a tarpaulin is 3ft.more than thrice its width and its area 126ft? what is the lenght of the tarpaulin??

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JthanSCOUTviz
Let x be the width of the tarpaulin
3x+3 = length of the tarpaulin

A=lw
126ft²=x(3x+3)
3x²+3x-126=0
(3x+21)(x-6)=0
3x/3=-21/3          x=6
x= -7 or 6 (So we'll use the positive value) x=6

Substituting x in the equation
Width = 6 ft
Length = 21 ft

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