SOLUTION: I have a rectangle whose length is 3x the width. If the length and width are both decrease by 2cm the area of the rectangle is decreased by 36cm^2. I think the formula is 3x^2-8x+4

SOLUTION: I have a rectangle whose length is 3x the width. If the length and width are both decrease by 2cm the area of the rectangle is decreased by 36cm^2. I think the formula is 3x^2-8x+4

Algebra.Com

Question 528465: I have a rectangle whose length is 3x the width. If the length and width are both decrease by 2cm the area of the rectangle is decreased by 36cm^2. I think the formula is 3x^2-8x+4. I need to know the beginning area?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
3x^2 - 36 = 3x^ - 8x + 4

x is the original width
RELATED QUESTIONS
The area of a rectang;e is 70. If the length is one less than 3 times the width,find the... (answered by ewatrrr)

The perimeter of a rectangle is 28cm. If the length were decreased by 2cm and the width... (answered by Tatiana_Stebko)

If the width of a rectangle is three fourths of the length. the perimeter of the... (answered by danishsiddiqui1000)

The perimeter of a rectangle is 28cm. The length is 2cm less than three times the width.... (answered by richwmiller,lwsshak3)

Find the length and width of the rectangle with the area of 35cm, whose length is x+4cm... (answered by tw23279)

The width of a rectangle is � its length. The perimeter of the rectangle becomes 50 cm... (answered by mananth,josgarithmetic)

if the length of a rectangle is increased by 20% and width of the same rectangle is... (answered by josgarithmetic)

a rectangle is 3cm longer than it is wide. IF the length and width of the rectangle are... (answered by mukhopadhyay)

the length of a rectangle is twice its width .if the width is reduced by 1cm and the... (answered by stanbon)