Question

Does x^4+9=90
x=3?
Thanks. Does x^4+9=90
x=3?
Thanks. @Mathematics

Answer 1

x^4 = 90-9
x^4 = 81
x = + 3, -3

Answer 2

Alright thanks! How about this one? (x-3)^5=60
Is it x=5.27?

Answer 3

3i and -3i are also solutions to that first one

Answer 4

\[x-3=60^\frac{1}{5} => x=3+60^\frac{1}{5}\]

Answer 5

which is approximately what you have

Answer 6

Thank you, is that the only answer?

Answer 7

you can write it in polar form to find other solutions if they exist