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Popular >

r^2-10r+9=0

Solution

r^{2} - 10 r + 9 = 0

Solution

r = 9, r = 1

Solution steps

r^{2} - 10 r + 9 = 0

Solve with the quadratic formula

r_{1, 2} = \frac{- ( - 10 ) \pm ( - 10 ) ^{2} - 4 \cdot 1 \cdot 9}{2 \cdot 1}

(- 10)^{2} - 4 \cdot 1 \cdot 9 = 8

r_{1, 2} = \frac{- ( - 10 ) \pm 8}{2 \cdot 1}

Separate the solutions

r_{1} = \frac{- ( - 10 ) + 8}{2 \cdot 1}, r_{2} = \frac{- ( - 10 ) - 8}{2 \cdot 1}

r = \frac{- ( - 10 ) + 8}{2 \cdot 1} : 9

r = \frac{- ( - 10 ) - 8}{2 \cdot 1} : 1

The solutions to the quadratic equation are:

r = 9, r = 1

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Frequently Asked Questions (FAQ)

What are the solutions to the equation r^2-10r+9=0 ?
The solutions to the equation r^2-10r+9=0 are r=9,r=1
Find the zeros of r^2-10r+9=0
The zeros of r^2-10r+9=0 are r=9,r=1