NatalieLove
Brooke wants to have equal amounts of room on all four sides of her pool table. A 4ft by 7ft table is placed in the center of a rectangular room that has an area of 238 square feet. What is the width of the clear space Brooke will have on all sides of her table?
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NatalieLove
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tutordiffeq
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(4+2x)(7+2x)=238
28+4x^2+22x=238
4x^2+22x-210=0
got it from here?
NatalieLove
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not really
tutordiffeq
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quadratic equation. (-b +/- sqrt( b^2-4ac)) / 2a
tutordiffeq
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ax^2+bx+c=0
tutordiffeq
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a=4
b=22
c=-210
NatalieLove
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i got 14 for the answer
NatalieLove
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sorry x = 5 right ?
tutordiffeq
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yup
NatalieLove
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alright thanks much