SOLUTION: 6. 2b^1/3 + 5 = 15 8. -4s^-3/5 - 1 =31 PLEase show work thank you

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: 6. 2b^1/3 + 5 = 15 8. -4s^-3/5 - 1 =31 PLEase show work thank you       Log On


   

Question 124686This question is from textbook Amsco's Preparing for the Regents Examination Mathematics B
: 6. 2b^1/3 + 5 = 15

8. -4s^-3/5 - 1 =31

PLEase show work thank you
This question is from textbook Amsco's Preparing for the Regents Examination Mathematics B

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
2%28b%5E%281%2F3%29%29+%2B+5+=+15+

2%28root%283%2Cb%29%29+=+15+-+5+

2b%5E1%2F3+%2B+5+=+15+

2%28root%283%2Cb%29%29+=+10+

%28root%283%2Cb%29%29+=+10%2F2+

%28root%283%2Cb%29%29+=+5+…..rise to the third power

%28root%283%2Cb%29%29%5E3+=+5%5E3+…..

b+=+125…..

8. -4%28s%5E%28-3%2F5%29%29+-+1+=31

-4%28root%285%2Cs%5E3%29%29+=31+%2B+1


-4%28root%285%2Cs%5E3%29%29+=32

%28root%285%2Cs%5E3%29%29+=32%2F-4

%28root%285%2Cs%5E3%29%29+=+-8

%28root%285%2Cs%5E3%29%29%5E5+=+%28-8%29%5E5

s%5E3+=+%28-8%29%5E5.............

s+=+root%283%2C+%28-8%29%5E5%29+.............

s+=+root%283%2C+%28-8%29%5E3%2A%28-8%29%5E2%29++.............

s+=+%28-8%29root%283%2C64%29.............

s+=+%28-8%29root%283%2C4%5E3%29.............

s+=+%28-8%294.............

s+=+-32.............