Math, asked by siya9536, 10 months ago


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question 12

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Answers

Answered by epicperson
3

middle term split.

x^2-12x+27

pdt=27

Sum=-12

so no.s are 3 and 9

=x^2-3x-9x+27

x(x-3)-9(x-3)

(x-9)(x-3)

thus these 2 are the sides of rectangle

area = lb

l=(x-9)

b=(x-3)

so perimeter =2 (l+b)

2(x-9+x-3)

2(2x-12)

4x-24

thus peirmeter =4x-24


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Answered by arc555
0

 =  >  {x}^{2}  - 12x + 27 \\  =  >  {x }^{2}  - 3x - 9x + 27 \\  =  > x(x - 3) - 9(x - 3) \\  =  > (x - 3)(x - 9)

Hence, dimensions of the given reactangle will be

(x - 3) \: and \: (x - 9

Perimeter = 2(x-3+x-9)

=>2(2x-12)

=>4x-24 Units.


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