simplify the equation
2√45 x √15
__________
-4√6
algebra help plz!!!!!!!!!!!!!!
2008-07-31 2:43 pm
回答 (4)
2008-07-31 2:52 pm
✔ 最佳答案
(2√45 x √15)/(-4√6)= (2√675)/(-4√6)
= (2/-4)(√675/√6)
= (-1/2)(√225/√3)
= (-√225)/(2√3)
= -15/(2√3)
2008-07-31 9:53 pm
2*3*â15 x â15
____________
-4â6
6*15 -â6
___ X __
-4â6 -â6
-90â6
____
24
-15â6/4
____________
-4â6
6*15 -â6
___ X __
-4â6 -â6
-90â6
____
24
-15â6/4
2008-07-31 9:52 pm
is this a fraction? because i don't believe you can have a negative number in front of the radical. if it isn't, then the expression above the line comes to be 30 rad3. sorry my computer won't allow me to do the radical sign!
參考: my math teacher taught me how to solve radical expressions
2008-07-31 9:52 pm
2*sqrt 45*15/4sqrt 6
first remark 45=3*15 so sqrt 3*15*15 =15 sqrt3
Numerator= 30sqrt 3
Denominator= -4sqrt3*sqrt2
N/D dividing by sqrt 3
30/-4sqrt2
first remark 45=3*15 so sqrt 3*15*15 =15 sqrt3
Numerator= 30sqrt 3
Denominator= -4sqrt3*sqrt2
N/D dividing by sqrt 3
30/-4sqrt2
收錄日期: 2021-05-01 10:55:38
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