What are the solutions to the equation x(x+3)=70 ?

The solutions to the equation x(x+3)=70 are x=7,x=-10

Find the zeros of x(x+3)=70

The zeros of x(x+3)=70 are x=7,x=-10

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x (x + 3) = 70

x = 7, x = - 10

Solution steps

x (x + 3) = 70

Expand

x (x + 3) : x^{2} + 3 x

x^{2} + 3 x = 70

Move

70

to the left side

x^{2} + 3 x - 70 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 3 \pm 3 ^{2} - 4 \cdot 1 \cdot ( - 70 )}{2 \cdot 1}

3^{2} - 4 \cdot 1 \cdot (- 70) = 17

x_{1, 2} = \frac{- 3 \pm 17}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 3 + 17}{2 \cdot 1}, x_{2} = \frac{- 3 - 17}{2 \cdot 1}

x = \frac{- 3 + 17}{2 \cdot 1} : 7

x = \frac{- 3 - 17}{2 \cdot 1} : - 10

The solutions to the quadratic equation are:

x = 7, x = - 10

z^{2} = (1 - i)^{\frac{1}{3}}

2 x (x + 7) = 0

5 - x^{2} = 4 x

5 x^{2} + 4 x = 2 x^{2} - 5 x

28 x^{2} - 85 x + 63 = 0

What are the solutions to the equation x(x+3)=70 ?
The solutions to the equation x(x+3)=70 are x=7,x=-10
Find the zeros of x(x+3)=70
The zeros of x(x+3)=70 are x=7,x=-10