which function has real zeros at x = −10 and x = −6? f(x) = x2 16x 60 f(x) = x2 − 16x 60 f(x) = x2 4x 60 f(x) = x2 − 4x 60
Would assume the function is a quadratic function. It is degree 2.
The zeros or roots are x = - 10, and x = -6.
For quadratic:
x² - (sum of roots)x + product = 0
x² - (-10 + -6)x + (-10)*(-6) = 0
x² - (-16)x + (60) = 0
x² + 16x + 60 = 0
f(x) = x² + 16x + 60
Answer:
Option A is correct
The function \(x^2+16x+60\) has real zeroes at x =-10 and x =-6
Explanation:
Given: The real zeroes or roots are x = -10, and x = -6
To find the quadratic function of degree 2.
\(x^2- (\alpha+\beta)x + \alpha\beta =0\) where α,β are real roots. ....[1]
Here, α= -10 and β= -6
Sum of the roots:
α+β = -10+(-6) = -10-6 = -16
Product of the roots:
αβ = (-10)(-6)= 60
Substitute these value in equation [1] we have;
\(x^2-(-16)x+60 = x^2+16x+60\)
Therefore, the quadratic function for the real roots at x =-10 and x =-6 ;
\(x^2+16x+60\)