SOLUTION: Find a number such that one half of it's square is equal to twice the number plus 8?
Algebra.Com
Question 390943: Find a number such that one half of it's square is equal to twice the number plus 8?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Find a number such that one half of it's square is equal to twice the number plus 8?
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Let number be x
1/2 *(x^2)=2x+8
multiply by 2
x^2=2(2x+8)
x^2=4x+16
x^2-4x-16=0
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use quadratic formula to find the roots of the equation
a=1,b=-4,c=16
b^2-4ac=80
...
...
m.ananth@hotmail.ca
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