Find the x-intercepts for the parabola defined
by this equation:
y = -2x^2 - 4x + 6
Write your answer as two ordered pairs:
(x1, yı), (x2, y2)
Separate the values with a comma. Round, if
necessary, to the nearest hundredth.

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b