Toán Lớp 9: câu 1: tính
a, (2 √2- √5+ √18). √5+20 √1/10
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 9: câu 1: tính
a, (2 √2- √5+ √18). √5+20 √1/10
Comments ( 1 )
= (2√2- √5 + √9.2)√5 + 20. $\frac{√1}{10}$
= (2√2- √5 + 3√2)√5 + 20. $\frac{1}{10}$
= (5√2 – √5)√5 + 2
= 5√10 – 5 + 2
= 5√10 -3