Question

the rectangle has a length that us 2 less than 3 times the width if the area of rectangle is 16 cmsquare. find it dimensons​

Answer 1

Step-by-step explanation:

Let the width of a rectangle be b

length =3b-2

area of a rectangle given=16cm²

formula = Length x breath

16= 3b-2 × b

16+2=3b×b

18=3b²

b²=18÷3

b²=6

Answer 2

L=3W-2

L×W=16

(3W-2)W=16

3W²-2W=6

3W²-2W-6=0

by using

$\frac{ - b +or - \sqrt{ {b}^{2} - ac } }{2a} find \: value \: ofw$

a=3

b=-2

c=-6

after solving W= (1±√19)/3

and L=3×(1±√19)/3-2

1±√19-2

-1±√19

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