多项式(1/2)*x平方+x-1,(1/2)*x平方+3x+1,(1/2)*x平方-x,选择两个进行加法运算并把结果因式分解
问题描述:
多项式(1/2)*x平方+x-1,(1/2)*x平方+3x+1,(1/2)*x平方-x,选择两个进行加法运算并把结果因式分解
答
若选(1/2)*x^2+x-1,(1/2)*x^2+3x+1(1/2)*x^2+x-1+(1/2)*x^2+3x+1=x^2+4x=x(x+4)若选(1/2)*x^2+3x+1,(1/2)*x^2-x(1/2)*x^2+3x+1+(1/2)*x^2-x=x^2+2x=x(x+2)若选(1/2)*x^2+x-1,(1/2)*x^2-x(1/2)*x^2+x...