Question

Find the exact solution of x. 3x² + 7 = 28 ( square root)

Answer 1

Answer

The exact solution of  x is 2.65  for the given equation 3x² + 7 = 28 .

Step-by-step explanation:

The equation given in the question is as follows.

3x² + 7 = 28

Now simplify the above eqaution

3x² = 28 - 7

3x² = 21

$x^{2} = \frac{21}{3}$

x² = 7

$x = \sqrt{7}$

$x = \sqrt{7}$

x = 2.65

Therefore the solution for x is 2.65  for the given equation 3x² + 7 = 28 .