Graph the quadratic y=x2+3x+8

. What is the x-intercept(s)?(1 point)
Responses

(−1.5,5.75)
left parenthesis negative 1.5 comma 5.75 right parenthesis

−1.5
negative 1.5

(0,8)
left parenthesis 0 comma 8 right parenthesis

There is no x-intercept.

1 answer

To find the x-intercept(s) of the quadratic function \( y = x^2 + 3x + 8 \), we need to set \( y \) to 0 and solve for \( x \):

\[ 0 = x^2 + 3x + 8 \]

Next, we can use the quadratic formula \( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \), where \( a = 1 \), \( b = 3 \), and \( c = 8 \).

Calculating the discriminant:

\[ b^2 - 4ac = 3^2 - 4(1)(8) = 9 - 32 = -23 \]

Since the discriminant is negative (-23), this means that there are no real roots, and thus there are no x-intercepts.

Therefore, the answer is:

There is no x-intercept.

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