化简:(4s-3t)^2-(4s+3t)^2
问题描述:
化简:(4s-3t)^2-(4s+3t)^2
答
(4s-3t)^2-(4s+3t)^2=(4s-3t+4s+3t)(4s-3t-4s-3t)=8s*-6t=-48*s*t
化简:(4s-3t)^2-(4s+3t)^2
(4s-3t)^2-(4s+3t)^2=(4s-3t+4s+3t)(4s-3t-4s-3t)=8s*-6t=-48*s*t