How do i factor this and graph it?

Question

y = x^4(x^2+4)
y=-x^4+6
y=-x^5+4x^2

Answer 1

do you have a graphing calculator? that si the best way to do it

Answer 2

For the frist one, just multiply x^4 through the parentheses:
y = x^4 (x^2 + 4)
y = x^4(x^2) + x^4(4)
y = x^6 + 4x^4

Since x is raised to a power, the graph is not a straight line. If you're sketching a graph on paper, pick some values for x, and solve for y. For example, if x=0 then y=0, so you know (0,0) is a point in the graph. Plot several points (don't forget to include some negative x's) and you should see a curve start forming.

Of course if you have a graphing calculator, this becomes much easier.

Answer 3

y = (x^4)(x^2 + 4)
y = -x^4 + 6 = -(x^4 - 6)
y = -x^5 + 4x^2 = -(x^2)(x^3 - 4)

without using sqrt or complex values, this problem can't be factored any further.

for a graph, go to http://www.calculator.com/calcs/GCalc.html

only type in the value after the y = part, leaving out the y = part or the graph will not show up, like you do on graphing calculators.