Question

Solve the equation by the Quadratic Formula. x^2+3=9x

Answer 1

Answer:

Step-by-step explanation:

Rearrange the given x^2+3=9x in standard quadratic form:

1x^2 - 9x +3 = 0

Then the three coefficients are a = 1, b = -9 and c = 3.

The discriminant is √(b^2 - 4ac), or √(81 - [1][3]), or √78.

                                        ± √78

Thus, the roots are x = ----------------

                                               2

Answer 2

Step-by-step explanation:

the 9x from the equation can be shifted into the equation and therefore x² + 3 = 9x can be also written as

x² - 9x + 3 = 0

then using the quadratic formula

$x = \frac{ - b \frac{ + }{ - } \sqrt{b {}^{2} - 4ac } }{2a}$

a = 1

b = -9

c = 3

substitute the values into the equation ,

insert it in your scientific calculator and you will have the answer of

x = 8.65 or x = 0.35