Question

The area of a rectangle is x²+7x+12 if its breadth is (x+3) then find its length

Answer 1

Answer:

area of rectangle is zero so there is no length and no breadth

Answer 2

AnswEr :

• Area of Rectangle = ( x² + 7x + 12 )
• Breadth = ( x + 3 )
• Length = ?

⇒ Area of Rectangle = Length × Breadth

⇒ ( x² + 7x + 12 ) = Length × ( x + 3 )

• We will Split Middle Term Now

⇒ ( x² + 4x + 3x + 12 ) = Length × ( x + 3)

⇒ x( x + 4 ) + 3( x + 4 ) = Length × ( x + 3 )

⇒ ( x + 4 )( x + 3 ) = Length × ( x + 3 )

• Compare Both Sides

⇒ Length = ( x + 4 )

჻ Length of the Rectangle is ( x + 4 )