What are the solutions to the equation -9x^2+4=-21 ?

The solutions to the equation -9x^2+4=-21 are x= 5/3 ,x=-5/3

Find the zeros of -9x^2+4=-21

The zeros of -9x^2+4=-21 are x= 5/3 ,x=-5/3

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- 9 x^{2} + 4 = - 21

x = \frac{5}{3}, x = - \frac{5}{3}

Decimal Notation

x = 1.66666 \dots, x = - 1.66666 \dots

Solution steps

- 9 x^{2} + 4 = - 21

Move

4

to the right side

- 9 x^{2} = - 25

Divide both sides by

- 9

x^{2} = \frac{25}{9}

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

x = \frac{25}{9}, x = - \frac{25}{9}

\frac{25}{9} = \frac{5}{3}

- \frac{25}{9} = - \frac{5}{3}

x = \frac{5}{3}, x = - \frac{5}{3}

x (x + 4) = 2300

x^{2} = 4.5

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

π r^{2} h = 35.257, r

4 - 6 (x - 5)^{2} = 0

What are the solutions to the equation -9x^2+4=-21 ?
The solutions to the equation -9x^2+4=-21 are x= 5/3 ,x=-5/3
Find the zeros of -9x^2+4=-21
The zeros of -9x^2+4=-21 are x= 5/3 ,x=-5/3