Question

Find the x-intercept(s) Round to nearest hundredth if needed y=-2x^2-8x-4​

Answer 1

y=-2x^2-8x-4

-2x^2-8x=4

divide by negative 2

x^2+4x=-2

complete the square

(x+2)^2=-2+4

(x+2)^2=2

x+2=±$\sqrt{2}$

x=-2±$\sqrt{2}$

nearest hundreths,

x=-0.59

x=-3.41