What are the solutions to the equation 140=0.81x^2 ?

The solutions to the equation 140=0.81x^2 are x=(20sqrt(35))/9 ,x=-(20sqrt(35))/9

Find the zeros of 140=0.81x^2

The zeros of 140=0.81x^2 are x=(20sqrt(35))/9 ,x=-(20sqrt(35))/9

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140 = 0.81 x^{2}

x = \frac{20 35}{9}, x = - \frac{20 35}{9}

Decimal Notation

x = 13.14684 \dots, x = - 13.14684 \dots

Solution steps

140 = 0.81 x^{2}

Switch sides

0.81 x^{2} = 140

Multiply both sides by

100

81 x^{2} = 14000

Divide both sides by

81

x^{2} = \frac{14000}{81}

For

x^{2} = f (a)

the solutions are

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

x = \frac{14000}{81}, x = - \frac{14000}{81}

\frac{14000}{81} = \frac{20 35}{9}

- \frac{14000}{81} = - \frac{20 35}{9}

x = \frac{20 35}{9}, x = - \frac{20 35}{9}

a^{2} - 5 a - 6 = 0

5 n^{2} + 2 n - 7

x^{2} + 8 x y + 7 y^{2}

7 w < - 42

x^{2} - 8 x = 16

What are the solutions to the equation 140=0.81x^2 ?
The solutions to the equation 140=0.81x^2 are x=(20sqrt(35))/9 ,x=-(20sqrt(35))/9
Find the zeros of 140=0.81x^2
The zeros of 140=0.81x^2 are x=(20sqrt(35))/9 ,x=-(20sqrt(35))/9