Question

x^2-3 x^4-4 x^4-10x^2+25 实数范围内的因式分解

Answer 1

x^2-3

=x²-(√3)²

=(X+√3)(X-√3)

x^4-4

=(X²+2)(X²-2)

=(X²+2)(X+√2)(X-√2)

x^4-10x^2+25

=（x²-5）²

=(x+√5)²(x-√5)²