Решите x^4-34x^2=-x^4-32

Question

Решите
x^4-34x^2=-x^4-32

Answer 1

2x^4-34x²+32=0
x²=a
a²-17a+16=0
a1+a2=17 U a1*a2=16
a1=1⇒x²=1⇒x=+-1
a2=16⇒x²=16⇒x=+-4