Question

What are the roots of the polynomial equation x^3-10x=-3x^2+24? Use a graphing calculator and a system of equations.

Answer 1

X^3-10x=-3x^2+24
simplifying the above we get
x^3+3x^2-10x-24=0
next we use the graphing tool to solve the expression above:
This will give us:
x=-4,x=-2, x=3
The answer is c] -4,-2,3

Answer 2

Answer : C

the roots of the polynomial equation x^3-10x=-3x^2+24

We use a graphing calculator

Graph the left hand side expression using graphing calculator

We graph $y=x^3 - 10x$

Then we graph the right hand side expression using graphing calculator

$y=-3x^2+24$

so we got two system of equations

The intersection of two graphs is our solution

The graph is attached below

We can see that the graph intersects at 3 points

(-4, -24)  (-2,12) and (3,-3)

So the roots are -4, -2 , 3