What are the solutions to the equation factor 3x^2-18x-21=0 ?

The solutions to the equation factor 3x^2-18x-21=0 are x=-1,x=7

Find the zeros of factor 3x^2-18x-21=0

The zeros of factor 3x^2-18x-21=0 are x=-1,x=7

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3 x^{2} - 18 x - 21 = 0

x = - 1, x = 7

Solution steps

3 x^{2} - 18 x - 21 = 0

Factor

3 x^{2} - 18 x - 21 : 3 (x + 1) (x - 7)

3 (x + 1) (x - 7) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

x + 1 = 0 or x - 7 = 0

Solve

x + 1 = 0 : x = - 1

Solve

x - 7 = 0 : x = 7

The solutions to the quadratic equation are:

x = - 1, x = 7

8 0^{2} + 6 0^{2} = x^{2}

x, x^{2} + 6 x = - 5

c (x) = 5 x^{2} - 1000 x + 62500

y^{2} - 7 y - 30 = 0

v, m E = \frac{1}{2} m v^{2} + m g h

What are the solutions to the equation factor 3x^2-18x-21=0 ?
The solutions to the equation factor 3x^2-18x-21=0 are x=-1,x=7
Find the zeros of factor 3x^2-18x-21=0
The zeros of factor 3x^2-18x-21=0 are x=-1,x=7