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MTH 209 week 1 individual assignment

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4.1 #50
-5y^4(y^5)^2/15y^7(y^2)^3
-5y^4(y^10)/15y^7(y^6)
-5y^14/15y^13
y/-3
4.2 #84
9*10^-4/3*10^-6
.0009/.000003
300
3*10^2
4.3 #32
-2x^4-3x^2+5x-9 x=2
-2(2^4)-3(2^2)+5(2)-9
-2(16)-3(4)+10-9
-32-12+1
-43
4.4 #34
(3c^2d-d^3+1)8cd^2
8cd^2(3c^2d)+8cd^2(-d^3)+8c^2d(1)
24c^3d^3-8cd^5+8cd^2
3(8c^3d^3-cd^5+cd^2)
3(8c^3d^3-d^3)
Answer:
4.5 #52
9h^2-25
4.6 #48
(3y^2+1)(3y^2-1)
9y^4-3y^2+3y^2-1
9y^4-1

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4.7 #66
2x^2+4/2x
_______
2x)2x^2+4
x______
2x)2x^2+4
-2x
---------
0 + 4
x + 4/2x
Answer:

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Score Sheet
Sec 4.1:
50
14.29 14.29
Sec 4.2:
84
14.29 14.29
Sec 4.3:
32
14.29 14.29
Sec 4.4:
34
14.29 7.14
Sec
4.5:52
14.29 14.29
Sec
4.6:48
14.29 14.29
Sec
4.7:66
14.29 12.29
100.0
0 90.86
3.00 2.73

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