What are the solutions to the equation 9r^2+30r+25=0 ?

The solutions to the equation 9r^2+30r+25=0 are r=-5/3

Find the zeros of 9r^2+30r+25=0

The zeros of 9r^2+30r+25=0 are r=-5/3

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9 r^{2} + 30 r + 25 = 0

r = - \frac{5}{3}

Decimal Notation

r = - 1.66666 \dots

Solution steps

9 r^{2} + 30 r + 25 = 0

Solve with the quadratic formula

r_{1, 2} = \frac{- 30 \pm 3 0 ^{2} - 4 \cdot 9 \cdot 25}{2 \cdot 9}

3 0^{2} - 4 \cdot 9 \cdot 25 = 0

r_{1, 2} = \frac{- 30 \pm 0}{2 \cdot 9}

r = \frac{- 30}{2 \cdot 9}

\frac{- 30}{2 \cdot 9} = - \frac{5}{3}

r = - \frac{5}{3}

The solution to the quadratic equation is:

r = - \frac{5}{3}

3 x^{2} + 5 x + 2

2 x^{3} + x^{2} + 8 x + 4

\frac{1}{10 \cdot 1 0 ^{- 6}}

105 ab - 90 a - 21 b + 18

4 0^{\frac{3}{2}}

What are the solutions to the equation 9r^2+30r+25=0 ?
The solutions to the equation 9r^2+30r+25=0 are r=-5/3
Find the zeros of 9r^2+30r+25=0
The zeros of 9r^2+30r+25=0 are r=-5/3