What are the solutions to the equation x^2+14x+21=0 ?

The solutions to the equation x^2+14x+21=0 are x=-7+2sqrt(7),x=-7-2sqrt(7)

Find the zeros of x^2+14x+21=0

The zeros of x^2+14x+21=0 are x=-7+2sqrt(7),x=-7-2sqrt(7)

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x^{2} + 14 x + 21 = 0

x = - 7 + 27, x = - 7 - 27

Decimal Notation

x = - 1.70849 \dots, x = - 12.29150 \dots

Solution steps

x^{2} + 14 x + 21 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 14 \pm 1 4 ^{2} - 4 \cdot 1 \cdot 21}{2 \cdot 1}

1 4^{2} - 4 \cdot 1 \cdot 21 = 47

x_{1, 2} = \frac{- 14 \pm 4 7}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 14 + 4 7}{2 \cdot 1}, x_{2} = \frac{- 14 - 4 7}{2 \cdot 1}

x = \frac{- 14 + 4 7}{2 \cdot 1} : - 7 + 27

x = \frac{- 14 - 4 7}{2 \cdot 1} : - 7 - 27

The solutions to the quadratic equation are:

x = - 7 + 27, x = - 7 - 27

x, e^{f} = 1 + x^{2}

a^{2} + 5^{2} = 8^{2}

4 x^{2} - 8 x - 3 = 0

(2 y + 7) (2 - y) = 0

y, 20 x^{3} y + 6 y = 5 x^{4} + 6 x + 3 y^{2}

What are the solutions to the equation x^2+14x+21=0 ?
The solutions to the equation x^2+14x+21=0 are x=-7+2sqrt(7),x=-7-2sqrt(7)
Find the zeros of x^2+14x+21=0
The zeros of x^2+14x+21=0 are x=-7+2sqrt(7),x=-7-2sqrt(7)