解方程5x²-√5x-6=0要用因式分解法,精确到0.1
问题描述:
解方程5x²-√5x-6=0
要用因式分解法,精确到0.1
答
5x²-√5x-6=0
(√5x-3)(√5x+2)=0
√5x=3 √5x=-2
x1=3√5/5 x2=-2√5/5