1. Akar 18x^7 2. Akar 50x^6y^12 3. 4akar3 - akar 192 + 6akar 12x^3 4. (3+akar3) (5-akar3)

1) √18x^7
= √9.2.x^6.x
= 3x^3√2x
2) √50x^6y^12
= x^3y^6√25.2
=6x^3y^6√2
3) 4√3 - √192 + 6√12x³
= 4√3 - √64.3 + 6√4.3x³
= 4√3 - 8√3 + 6.2.x√3x
= -4√3 + 12x√3x
4) (3 + √3)(5 - √3)
15 - 3√3 + 5√3 - 3
12 + 2√3