Sadly there is no way to graph properly on this website.
<span>x intercept when f(x) = 0
so
</span><span>x^2-81 = 0
x^2 = 81
x = + 9 and x = -9
Answer
</span><span>C -9</span>
-2n + 9mn - 17np
All you do is simplify the equation by distributing and multiplying the 1/3n to each of the numbers.
Hope this helps!