Răspuns :
Răspuns:
b) x = √54+4√24-2√150
x = 3√6+8√6-10√6
x = (3+8-10)√6
x = √6
y = √18-5√72+3√98
y = 3√2-30√2+21√2
y = (3-30+21)√2
y = -6√2
|x•y| = |√6•(-6√2)| = |-6√12| = |-12√3| = 12√3
EVERGREEN
Răspuns:
b) x = √54+4√24-2√150
x = 3√6+8√6-10√6
x = (3+8-10)√6
x = √6
y = √18-5√72+3√98
y = 3√2-30√2+21√2
y = (3-30+21)√2
y = -6√2
|x•y| = |√6•(-6√2)| = |-6√12| = |-12√3| = 12√3
EVERGREEN