Question

Y=x^4-25

Answer 1

What do you need? Factoring or solving or graphing?

Answer 2

I need to find the x and y intercepts

Answer 3

did you graph it yet? https://www.desmos.com/calculator

Answer 4

x-intercept means y = 0, and y-intercept means x = 0.
so just substitute and solve:
0 = x^4 - 25
0 = (x^2 + 5)(x^2 - 5)
0 = (x + i√(5))(x - i√(5))(x + x√(5))(x - √(5))
so x-intercept are
±√(5) and ±i√(5))
and
y = (0)^4 - 25
y = -25
so y-intercept = -25

Answer 5

You can also do it visually by graphing it, and seeing where it intersect the x and y axis but you would only find the y intercept with this one.

Answer 6

Yup, she could have done it using a graphing calculator. It's the "simpler" way.