Asked by Anonymous
Find a positive real number such that its square is equal to 4 times the number, increased by 60.
Answers
Answered by
Reiny
Did you translate the English into Math?
I said:
x^2 = 4x + 60
now you have a nice and simple quadratic which factors.
x^2 - 4x - 60 = 0
solve for x, and take only the positive result
I said:
x^2 = 4x + 60
now you have a nice and simple quadratic which factors.
x^2 - 4x - 60 = 0
solve for x, and take only the positive result
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