What are the solutions to the equation 9c^2-39c=30 ?

The solutions to the equation 9c^2-39c=30 are c=5,c=-2/3

Find the zeros of 9c^2-39c=30

The zeros of 9c^2-39c=30 are c=5,c=-2/3

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9 c^{2} - 39 c = 30

c = 5, c = - \frac{2}{3}

Decimal Notation

c = 5, c = - 0.66666 \dots

Solution steps

9 c^{2} - 39 c = 30

Move

30

to the left side

9 c^{2} - 39 c - 30 = 0

Solve with the quadratic formula

c_{1, 2} = \frac{- ( - 39 ) \pm ( - 39 ) ^{2} - 4 \cdot 9 ( - 30 )}{2 \cdot 9}

(- 39)^{2} - 4 \cdot 9 (- 30) = 51

c_{1, 2} = \frac{- ( - 39 ) \pm 51}{2 \cdot 9}

Separate the solutions

c_{1} = \frac{- ( - 39 ) + 51}{2 \cdot 9}, c_{2} = \frac{- ( - 39 ) - 51}{2 \cdot 9}

c = \frac{- ( - 39 ) + 51}{2 \cdot 9} : 5

c = \frac{- ( - 39 ) - 51}{2 \cdot 9} : - \frac{2}{3}

The solutions to the quadratic equation are:

c = 5, c = - \frac{2}{3}

0 = - 3 x^{2} + 6 x - 2

4 x^{2} + 22 x - 2 = 0

f (2) + x^{2} [f (2)]^{5} = 34

- x^{2} + 6 = x + 4

4 x^{2} + 3 = 115

What are the solutions to the equation 9c^2-39c=30 ?
The solutions to the equation 9c^2-39c=30 are c=5,c=-2/3
Find the zeros of 9c^2-39c=30
The zeros of 9c^2-39c=30 are c=5,c=-2/3