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What are all the roots of x2-4x+29=0

User Neptali
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1 Answer

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To solve a quadratic equation in the form
ax^2+bx+c=0 you can use the quadratic formula:


x_(1,2) = (-b\pm√(b^2-4ac))/(2a)

In your case, the equation
x^2-4x+29=0 is identified by the coefficient choice
a=1,\ b=-4,\ c=29, so the solving formula becomes


x_(1,2) = (4\pm√(16-116))/(2) = (4\pm√(-100))/(2)

As you can see, we have a negative number under a square root, an operation impossible to perform using real numbers. So, this equation has no real solutions.

User Wuerg
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