二次根式计算题①5√8-2√32+√50②√6-√3/2-√2/3③(√45+√27)-(√4/3+√125)④(√4a-√50b)-2(√b/2+√9a)⑤√4x*(√3x/2-√x/6)⑥(x√y-y√x)÷√xy⑦(3√7+2√3)(2√3-3√7)⑧(√32-3√3)(4√2+√27)⑨(3√6-√4)&
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 23:04:55
![二次根式计算题①5√8-2√32+√50②√6-√3/2-√2/3③(√45+√27)-(√4/3+√125)④(√4a-√50b)-2(√b/2+√9a)⑤√4x*(√3x/2-√x/6)⑥(x√y-y√x)÷√xy⑦(3√7+2√3)(2√3-3√7)⑧(√32-3√3)(4√2+√27)⑨(3√6-√4)&](/uploads/image/z/1064808-0-8.jpg?t=%E4%BA%8C%E6%AC%A1%E6%A0%B9%E5%BC%8F%E8%AE%A1%E7%AE%97%E9%A2%98%E2%91%A05%E2%88%9A8-2%E2%88%9A32%2B%E2%88%9A50%E2%91%A1%E2%88%9A6-%E2%88%9A3%2F2-%E2%88%9A2%2F3%E2%91%A2%28%E2%88%9A45%2B%E2%88%9A27%29-%28%E2%88%9A4%2F3%2B%E2%88%9A125%29%E2%91%A3%28%E2%88%9A4a-%E2%88%9A50b%29-2%28%E2%88%9Ab%2F2%2B%E2%88%9A9a%29%E2%91%A4%E2%88%9A4x%2A%28%E2%88%9A3x%2F2-%E2%88%9Ax%2F6%29%E2%91%A5%28x%E2%88%9Ay-y%E2%88%9Ax%29%C3%B7%E2%88%9Axy%E2%91%A6%283%E2%88%9A7%2B2%E2%88%9A3%29%282%E2%88%9A3-3%E2%88%9A7%29%E2%91%A7%28%E2%88%9A32-3%E2%88%9A3%29%284%E2%88%9A2%2B%E2%88%9A27%29%E2%91%A8%283%E2%88%9A6-%E2%88%9A4%29%26)
二次根式计算题①5√8-2√32+√50②√6-√3/2-√2/3③(√45+√27)-(√4/3+√125)④(√4a-√50b)-2(√b/2+√9a)⑤√4x*(√3x/2-√x/6)⑥(x√y-y√x)÷√xy⑦(3√7+2√3)(2√3-3√7)⑧(√32-3√3)(4√2+√27)⑨(3√6-√4)&
二次根式计算题
①5√8-2√32+√50
②√6-√3/2-√2/3
③(√45+√27)-(√4/3+√125)
④(√4a-√50b)-2(√b/2+√9a)
⑤√4x*(√3x/2-√x/6)
⑥(x√y-y√x)÷√xy
⑦(3√7+2√3)(2√3-3√7)
⑧(√32-3√3)(4√2+√27)
⑨(3√6-√4)²
⑩(1+√2-√3)(1-√2+√3)
就没人会全部的吗?
谁会我再给40分~
二次根式计算题①5√8-2√32+√50②√6-√3/2-√2/3③(√45+√27)-(√4/3+√125)④(√4a-√50b)-2(√b/2+√9a)⑤√4x*(√3x/2-√x/6)⑥(x√y-y√x)÷√xy⑦(3√7+2√3)(2√3-3√7)⑧(√32-3√3)(4√2+√27)⑨(3√6-√4)&
①5√8-2√32+√50
=5*3√2-2*4√2+5√2
=√2(15-8+5)
=12√2
②√6-√3/2-√2/3
=√6-√6/2-√6/3
=√6/6
③(√45+√27)-(√4/3+√125)
=(3√5+3√3)-(2√3/3+5√5)
=-2√5+7√5/3
④(√4a-√50b)-2(√b/2+√9a)
=(2√a-5√2b)-2(√2b/2+3√a)
=-4√a-6√2b
⑤√4x*(√3x/2-√x/6)
=2√x(√6x/2-√6x/6)
=2√x*(√6x/3)
=2/3*|x|*√6
⑥(x√y-y√x)÷√xy
=x√y÷√xy-y√x÷√xy
=√x-√y
⑦(3√7+2√3)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
⑧(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
⑨(3√6-√4)²
=(3√6)^2-2*3√6*√4+(√4)^2
=54-12√6+4
=58-12√6
⑩(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1-(√2-√3)^2
=1-(2+3+2√6)
=-4-2√6