(m2-n2) (m2-n-2)-8=0,则m2-n2的值是
问题描述:
(m2-n2) (m2-n-2)-8=0,则m2-n2的值是
答
(m2-n2) (m2-n-2)-8=0,则m2-n2的值是±2√2
(m2-n2) (m2-n-2)-8=0
(m2-n2) (m2-n-2)=8
m2-n2=±2√2