1,计算:√(13+2√7+2√5+2√35) -(3√7+4√6+√3)/(√42+√21+3√2+6)=____________数学解答

1,计算:√(13+2√7+2√5+2√35) -(3√7+4√6+√3)/(√42+√21+3√2+6)=___________________

人气：111 ℃　时间：2019-10-10 04:21:17

解答

√(13+2√7+2√5+2√35)-(3√7+4√6+√3)/(√42+√21+3√2+6)=√(√7+√5+1)² - (√3√21+4√3√2+√3)/[√2√21+√21+3√2+3√2√2]=√7+√5+1 - √3(√21+4√2+1)/[(√2+1)√21+3(√2+1)√2]=√7+√5+1 - √3...