Use the quadratic formula to find the x-intercepts of the function. Round to the nearest tenth if necessary.
y = -2x2 + 5x - 1
A. {2.3, 0.2}
B. {2.2, -5.8}
C. {-9.2, -0.8}
D. no real solution

Question

Use the quadratic formula to find the x-intercepts of the function. Round to the nearest tenth if necessary.
y = -2x2 + 5x - 1
	A.	{2.3, 0.2}
	B.	{2.2, -5.8}
	C.	{-9.2, -0.8}
	D.	no real solution

anonymous · Answer

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

anonymous · Answer

$$x=\frac{ -5\frac{ + }{ - } \sqrt{5^2 - 4(-2*-1)}}{ 2*(-2) }$$

anonymous · Answer

$$x=\frac{ 5\frac{ + }{ - } \sqrt{17}}{ -4 }$$

anonymous · Answer

So you have:
$$x=\frac{ 5+\sqrt{8} }{ -4 }$$
and
$$x=\frac{ 5-\sqrt{8} }{ -4 }$$
Then you need to simplify to get your answer.