Question

pls only answer if yk how to do it correct answer gets brainliest!

solve the equation :
-x^2-6x-8=-2x^2 to the nearest tenth

Answer 1

princessxxamari's answer is correct.

Answer 2

Answer:

$x = 3+\sqrt{17}, 3-\sqrt{17}$

x = 7.1, -1.1

Step-by-step explanation:

-x^2 - 6x - 8 = -2x^2

Add 2x^2 to both sides:

x^2 - 6x - 8 = 0

Now we have to use the quadratic formula.

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

$x = \frac{6 +- \sqrt{6^{2}-4(-8)} }{2}$

$x = \frac{6 +- \sqrt{36+32} }{2}$

$x = \frac{6 +- \sqrt{68} }{2}$

$x = \frac{6 +-2 \sqrt{17} }{2}$

$x = 3+-\sqrt{17}$