Question

Solve by using tables. Give each answer to at most two decimal places. –2x2 – 4 = –8x (1 point) 0.59, 3.41 –3.41, –0.59 1.17, 6.83 –1.41, 1.41

Answer 1

The answer is ou need to rewrite the equation to make it easy... and let it equal zero 2x2−8x+4=0 which will become 2(x2−4x+2)=0 you need to solve x2−4x+2=0 by completing the square or the general quadratic formula.

Answer 2

The solution to the quadratic equation x² - 4x - 2 =0 is 0.59 and 3.41

Explanation:

Given the equation -2x² - 4 = -8x

rearrange the equation we now have -2x² +8x - 4 = 0

divide each term in the equation by -2, we have

x² - 4x - 2 =0

To get the table, we substitute the given values of x in the equation to get the corresponding values for y

x values y values

0.59 -0.0119

3.41 -0.0119

-3.41 27.2681

-0.59 4.7081

1.17 -1.3111

6.83 21.3289

-1.41 9.6281

1.41 -1.6519

The two points of x where y =0 are 0.59 and 3.41

Therefore the solution to the quadratic equation x² - 4x - 2 =0 is 0.59 and 3.41