What are the solutions to the equation x^2+21x=0 ?

The solutions to the equation x^2+21x=0 are x=0,x=-21

Find the zeros of x^2+21x=0

The zeros of x^2+21x=0 are x=0,x=-21

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x^{2} + 21 x = 0

x = 0, x = - 21

Solution steps

x^{2} + 21 x = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 21 \pm 2 1 ^{2} - 4 \cdot 1 \cdot 0}{2 \cdot 1}

2 1^{2} - 4 \cdot 1 \cdot 0 = 21

x_{1, 2} = \frac{- 21 \pm 21}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 21 + 21}{2 \cdot 1}, x_{2} = \frac{- 21 - 21}{2 \cdot 1}

x = \frac{- 21 + 21}{2 \cdot 1} : 0

x = \frac{- 21 - 21}{2 \cdot 1} : - 21

The solutions to the quadratic equation are:

x = 0, x = - 21

48 = \frac{1}{2} b (3 b - 2)

4 x^{2} + 8 x - 17 = x^{2} - 2 x

\frac{9}{9 ^{- \frac{4}{5}}}

\frac{3}{2} \cdot 9

3 x^{2} - 36 x = 0

What are the solutions to the equation x^2+21x=0 ?
The solutions to the equation x^2+21x=0 are x=0,x=-21
Find the zeros of x^2+21x=0
The zeros of x^2+21x=0 are x=0,x=-21