1/2x^4-5x^2+9/2 因式分解.
问题描述:
1/2x^4-5x^2+9/2 因式分解.
答
=1/2(x^4-10x^2+9)
=1/2(x^2-9)(x^2-1)
=1/2(x-3)(x+3)(x-1)(x+1)