Ii need help real quick !!

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate. in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)