The sides of rectangulare field
are & x²+3 and
x²-4 metres. find the area and perimeter.
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Answer:
AREA : x^4 - x^2 - 12
PERIMETER : 4x^2 - 2
Step-by-step explanation:
The area = length × breadth
A = ( x^2 + 3) ( x^ 2 - 4 )
= x^4 - 4x^2 + 3x^2 - 12
= x^4 - x^2 - 12
The Perimeter = 2( length + breadth )
= 2 ( x^2 +3 + x^2 - 4)
= 2 ( 2x^2 - 1 )
= 4x^2 - 2
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