Question

the width of a rectangle card is 2 cm.less than the lenght.the area is 35 cm².find the length and width.

Answer 1

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Answer 2

Answer:

let the length n width be x and x-2

we know

area of a rectangle=35

x*(x-2)=35

x²-2x=35

x²-2x-35=O

x²-(7-5)x-35(splitting the middle term)

x²-7x+5x-35

x(x-7) +5 (x-7)

(x-7)(x+5)

Either x-7=O or x+5=0

x=7. or. x=-5(not possible)

Therefore,lenght=x

=7

breadth=x-2

=7-2

=5