Question

Ajutați-mă urgent (√8 - 3 √2 + √10)(√2 + √1,6 + 3 √0,4)

Answer 1

(√8 - 3 √2 + √10)(√2 + √1,6 + 3 √0,4)=

(2√2-3√2+√10)(√2+√16/√10+3√4/√10)=

(-√2+√10)(√2+4/√10+3×2/√10)

(√10-√2)(√2+10/√10)=

(√10-√2)(√2+10√10/10)=

(√10-√2)(10√2+10√10)/10=

(√10-√2)(√2+√10)10/10=

(√10-√2)(√2+√10)=

(√10)²-(√2)²=10-2=8