What are the solutions to the equation 7r^2+8=281 ?

The solutions to the equation 7r^2+8=281 are r=sqrt(39),r=-sqrt(39)

Find the zeros of 7r^2+8=281

The zeros of 7r^2+8=281 are r=sqrt(39),r=-sqrt(39)

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7 r^{2} + 8 = 281

r = 39, r = - 39

Decimal Notation

r = 6.24499 \dots, r = - 6.24499 \dots

Solution steps

7 r^{2} + 8 = 281

Move

8

to the right side

7 r^{2} = 273

Divide both sides by

7

r^{2} = 39

For

x^{2} = f (a)

the solutions are

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

r = 39, r = - 39

2 a^{2} + 5 a + 2 = 0

x^{2} + 6 x = 15

4 v^{2} - 12 v = 0

3 x^{2} - 18 x + 20 = 0

2 x^{2} - 12 x + 3 = 0

What are the solutions to the equation 7r^2+8=281 ?
The solutions to the equation 7r^2+8=281 are r=sqrt(39),r=-sqrt(39)
Find the zeros of 7r^2+8=281
The zeros of 7r^2+8=281 are r=sqrt(39),r=-sqrt(39)