Algebra 1, Vote Best Answer

Please help me i just dont get this,

Simplify the rational expressions. State any excluded values. ≠
1. 2x – 8 /over/ x - 4
• 2; where x ≠ 4
• x
• 3 –negative over- 2
• 8; where x ≠ 2

2. 4x – 8 /over/ 4x + 20
• x – 2 /over/ 4x + 20; where x ≠ -5
• x + 5 /over/ x – 2; where x ≠ 2
• – 2 /over/ x + 5; where x ≠ -5
• 4 (x + 2 /over/ x – 5); where x ≠ 5

3. x+7 over x^2 + 4x - 21
• 1 over x-3; where x≠3,-7
• x-3; where
• 1 over x - 7; where x≠7
• x-7

4. x^2 – 3x – 10 over x+2
• x-5; where x≠-2
• x-5; where x≠5
• 1over x-2; where x≠2
• x-2

5. x^2 – 4 over 2 -x
• x + 2; where x≠-2
• 1 over x+2; where x≠-2
• –x – 2; where x≠2
• 1 over x-2; where x≠2

1. 2x – 8 /over/ x - 4
2(x-4)/(x-4) = 2; where x ≠ 4

2. 4x – 8 /over/ 4x + 20
4(x-2)/4(x+5) = x-2/x+5
x – 2/ 4x + 20; where x ≠ -5

3. x+7 over x^2 + 4x - 21
x+7/(x-3)(x+7)= 1/x-3
1 over x-3; where x≠3,-7

4. x^2 – 3x – 10 over x+2
(x-5)(x+2)/(x+2)=x-5
x-5; where x≠ -2

5. x^2 – 4 over 2 -x
(x-2)(x+2)/-(x-2) = -(x+2)
–x – 2; where x≠2