Question

(根号6-2倍的根号15)×根号3-6倍的根号2分之1

Answer 1

(1)(√6-2√15)×√3-6√1/2=3√2-2×3√5-6×√2/2=3√2-6√5-3√2=-6√5

(2)√12÷√6×√1/6=√2×√6/6=2√3/6=√3/3

(3)(√48-√1/6)÷√3=(4√3-√6/6)÷√3=4-√2/6

(4)(√7-2)^2+(2-√3)(2+√3)=11-4√7+1=12-4√7

(5)√12/√3×√6=2√6

(6)4x^2=25

x^2=25/4

x^2=(5/2)^2

x=5/2或x=-5/2