Answer: 4y-9
Step-by-step explanation:
A of rectangle =S1xS2 or LxW
A= 16y^-81
S1=4y+9
So deriving from the formula
S2 = A/S1
S2= (16y^2 - 81)/(4y+9)
Seeing the equation the side is a factor of the area.
Using factorial method
16y^2 - 81 = (4y^2 +9)(4y^2 - 9)
So
(4y^2 +9)(4y^2 - 9)=(4y^2 +9)
Dividing two sides by 4y^2 +9
We get 4y^2 - 9
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Answer: 4y-9
Step-by-step explanation:
A of rectangle =S1xS2 or LxW
A= 16y^-81
S1=4y+9
So deriving from the formula
S2 = A/S1
S2= (16y^2 - 81)/(4y+9)
Seeing the equation the side is a factor of the area.
Using factorial method
16y^2 - 81 = (4y^2 +9)(4y^2 - 9)
So
(4y^2 +9)(4y^2 - 9)=(4y^2 +9)
Dividing two sides by 4y^2 +9
We get 4y^2 - 9