数学2次根式计算1/6√1又3/5×(-5√3又√3/5)(2)√8/a×√2a/b(3)√2x乘以√2y乘以√x(4)2√a÷4√b(5)5√xy÷√5x^3(6)√x-y÷√x+y(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)(8)√xy乘以√6x÷√3
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 00:30:12
![数学2次根式计算1/6√1又3/5×(-5√3又√3/5)(2)√8/a×√2a/b(3)√2x乘以√2y乘以√x(4)2√a÷4√b(5)5√xy÷√5x^3(6)√x-y÷√x+y(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)(8)√xy乘以√6x÷√3](/uploads/image/z/8668512-0-2.jpg?t=%E6%95%B0%E5%AD%A62%E6%AC%A1%E6%A0%B9%E5%BC%8F%E8%AE%A1%E7%AE%971%2F6%E2%88%9A1%E5%8F%883%2F5%C3%97%EF%BC%88-5%E2%88%9A3%E5%8F%88%E2%88%9A3%2F5%EF%BC%89%EF%BC%882%EF%BC%89%E2%88%9A8%2Fa%C3%97%E2%88%9A2a%2Fb%EF%BC%883%EF%BC%89%E2%88%9A2x%E4%B9%98%E4%BB%A5%E2%88%9A2y%E4%B9%98%E4%BB%A5%E2%88%9Ax%EF%BC%884%EF%BC%892%E2%88%9Aa%C3%B74%E2%88%9Ab%EF%BC%885%EF%BC%895%E2%88%9Axy%C3%B7%E2%88%9A5x%5E3%EF%BC%886%EF%BC%89%E2%88%9Ax-y%C3%B7%E2%88%9Ax%2By%EF%BC%887%EF%BC%89%E2%88%9Ax%EF%BC%88x%2By%EF%BC%89%C3%B7%E2%88%9Axy%5E2%2Fx%2By%EF%BC%88x%3E0%2Cy%3E0%EF%BC%89%EF%BC%888%EF%BC%89%E2%88%9Axy%E4%B9%98%E4%BB%A5%E2%88%9A6x%C3%B7%E2%88%9A3)
数学2次根式计算1/6√1又3/5×(-5√3又√3/5)(2)√8/a×√2a/b(3)√2x乘以√2y乘以√x(4)2√a÷4√b(5)5√xy÷√5x^3(6)√x-y÷√x+y(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)(8)√xy乘以√6x÷√3
数学2次根式计算
1/6√1又3/5×(-5√3又√3/5)(2)√8/a×√2a/b(3)√2x乘以√2y乘以√x(4)2√a÷4√b(5)5√xy÷√5x^3(6)√x-y÷√x+y(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)(8)√xy乘以√6x÷√3y(9)(√mn-√m/n)÷√m/n(n>0)
数学2次根式计算1/6√1又3/5×(-5√3又√3/5)(2)√8/a×√2a/b(3)√2x乘以√2y乘以√x(4)2√a÷4√b(5)5√xy÷√5x^3(6)√x-y÷√x+y(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)(8)√xy乘以√6x÷√3
1/6√1又3/5×(-5√3又√3/5)
=1/6√(8/5)×(-5/3√(3/5)
=-5/18√(24/25)
=-5/18×2/5√6
=-1/9√6
(2)√8/a×√2a/b
=√(8/a×2a/b)
=√(16/b)
=4/b(√b)
(3)√2x乘以√2y乘以√x
=√(2x*2y*x)
=2x√y
(4)2√a÷4√b
=√a/2√b
=1/2b√ab
(5)5√xy÷√5x^3
=5√(xy/5x³)
=1/x√5y
(6)√x-y÷√x+y
=1/(x+y)√(x²-y²)
(7)√x(x+y)÷√xy^2/x+y(x>0,y>0)
=√[x(x+y)÷xy²/(x+y)]
=(x+y)/y
(8)√xy乘以√6x÷√3y
=√6x²y÷√3y
=x√2
(9)(√mn-√m/n)÷√m/n(n>0)
=√mn÷m/n-√m/n÷m/n
=n-1