(-125)^(4/3)

You purchased 12 pens and 5 notebooks for $11.10.Your friend bought 2 pens and one notebook for $2.10.How much will one pen and one notebook cost?

You buy 12 pens and 5 notebooks for $11.10 and your buys 2 pens and one notebook for $2.10. How much will one pen and one notebook cost?

A)1/4=3-2x-1/x+2

2x+(1/x+2) = 3-1/4

2x+(1/x+2) = 11/4

2x+1/x = 11/4 - 2

2x^2+1/x = 3/4

B)x3/2 =125

X^3/2 = 125

X^3 = 125x2

X^3 = 250

x = cuberoot(250)

x= 6.29

C)squaretroot:3/x-4=2

squaretroot:3/x=2 +4

squaretroot:3/x=6

3/x=6^2

3/x = 36

x = 3/36

x = 1/12

2x+(1/x+2) = 3-1/4

2x+(1/x+2) = 11/4

2x+1/x = 11/4 - 2

2x^2+1/x = 3/4

B)x3/2 =125

X^3/2 = 125

X^3 = 125x2

X^3 = 250

x = cuberoot(250)

x= 6.29

C)squaretroot:3/x-4=2

squaretroot:3/x=2 +4

squaretroot:3/x=6

3/x=6^2

3/x = 36

x = 3/36

x = 1/12