f(X)=10x^2+8x^5-12x^3 求f(X)除以(-5x^2) f(x)乘以(x^2-1)
问题描述:
f(X)=10x^2+8x^5-12x^3 求f(X)除以(-5x^2) f(x)乘以(x^2-1)
答
f(x)=2x^2(5+4x^3-6x)
f(x)/(-5x^2)=-2/5(5+4x^3-6x)
f(x)*(x^2-1)=2x^2(5+4x^3-6x)*(x^2-1)=8x^7-20x^5+10x^4+12x^3+10x^2