Question

Calculati a = 5√5+2√5-8√5 = ??

Answer 1

a=5√5+2√5-8√5
a=7√5-8√5
a= -√5

Answer 2

a = ... =√5×(5+2-8) = √5×(-1) = - √5

adaug si raspunsul la intrebarea b= ...

b =2√12 : √2 + √6 =2√(4×3) : √2 + √6 = (4√3:√2) + √6 = (4√6)/2 + √6 =2√6+√6=3√6 ;