Question

When the solution of x2 - 9x - 6 is expressed as
what is the value of r?
NIH

Answer 1

Hey there! :)

Answer:

r = 105.

Explanation:

In the quadratic formula, √r =
`{\sqrt{b^(2)-4ac }`

Where a = 1, b = -9, and c = -6. Therefore:

√r = √(-9)² - 4(1)(-6)

√r = √81 -4(-6)

√r = √81 + 24

√r = √105

Therefore, r = 105.