(1/2√a+3/4√a³-7/8√a五次方)(-16√a³
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(1/2√a+3/4√a³-7/8√a五次方)(-16√a³
(1/2√a+3/4√a³-7/8√a五次方)(-16√a³
(1/2√a+3/4√a³-7/8√a五次方)(-16√a³
让你久等了!
(1/2√a+3/4√a³-7/8√a五次方)(-16√a³)
=-8√a⁴-12√a^6+14√a^8
=-8a²-12a³+14a⁴
=14a⁴-12a³-8a²
(5+√6)X(5√2-2√3)
=5×5√2-5×2√3+√6×5√2-√6×2√3
=25√2-10√3+5√12-2√18
=25√2-10√3+10√3-6√2
=19√2
愿对你有所帮助!(不同题目确实应另行求助的)【语文陈老师】