1.Simplify the difference.

Question

n^2 - lOn+24 9 /
n^2 - 13n + 42 — 7

A. n-13/n-7 <<<

B. n-4/n-7

C. n-13

2.Simplify the complex fraction.

y-1/y^2+y-6/y-6/y+3

A.(y-1)(y-6)/(y+3)^2(y-2)

B. y-1/(y-6)(y-2)

C.(y-1)(y-6)/(y+3)(y-2)<<<

3.Find the least common multiple of x^3-x^2+x-1 and x^2-1 . Write the answer in factored form.

A. (x+1)^2(x-1)

B. (x+1)(x-1)(x^2+1)

C. (x^3-x^2+x-1)(x^2-1)<<<

4.Simplify the rational expression. State any restrictions on the variable.

t^2-4t-32/t-8

A. t-4;t=-8 <<<

B. t+4;t=8

C.-t-4;t=8

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