The area of a rectangle is
let the width be "x"so length "l" = 5+2xgiven area = 63 m sqarea of rectangle is given by = length*width
so, (5+2x)(x)= 63or 2x^2 +5x = 63or, 2x^2+5x -63=0or, 2x^2 +14x -9x -63 = 0or, 2x(x+7)-9(x+4) = 0or, (2x-9)(x+7)=0so, 2x-9=0 or, x=9/2 = 4.5and x+7=0, or x=-7since width cannot be negative.x= 4.5 mso length = 5+2x=5+2*4.5 = 5+9 = 14so length =14 m and width = 4.5 mPlease best my answer and add me as your tutor for further help. Thanks :)
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