the figure shows the dimention of wall having a window and a door of a room . write
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wall is in a rectangular shape
hence, area of rectangle = l×b
=7x - 3 × ( 5x + 2)
=7x( 5x + 2) - 3 ( 5x + 2)
=35x^2 - 15x -2 ----( 1)
now area not to be painted = 3x-1 × (x+1) + 2x+3 × (x+2)
= 4x^2 + 3x -x -1 + 2x^2 + 4x + 3x + 3
= 6x^2 + 9x + 2 ------( 2 )
Now subtracting 1 by 2
=35x^2 - 15x - 2 - ( 6x^2 +9x +2 )
= 35x^2 - 15x - 2 -6x^2 -9x -2
= 29x^2 -24x -4
This is the answer bro
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hence, area of rectangle = l×b
=7x - 3 × ( 5x + 2)
=7x( 5x + 2) - 3 ( 5x + 2)
=35x^2 - 15x -2 ----( 1)
now area not to be painted = 3x-1 × (x+1) + 2x+3 × (x+2)
= 4x^2 + 3x -x -1 + 2x^2 + 4x + 3x + 3
= 6x^2 + 9x + 2 ------( 2 )
Now subtracting 1 by 2
=35x^2 - 15x - 2 - ( 6x^2 +9x +2 )
= 35x^2 - 15x - 2 -6x^2 -9x -2
= 29x^2 -24x -4
This is the answer bro
MARK AS BRANILIST
PLEASE
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