Question

Help with Algebra 1 Rational Expressions?!

Answer 1

What is the simplified form of x^4-81 over x+3
A) x^3-3x^2+9x-27
B) (x^2+9)(x^2-9)
C) x^3+3x^2+9x+27
D) x^3+3x^2-9x-27
2)What is the simplified form of (x^2yz)^2(xy^2z^2) over (xyz)^2?
A) (xyz)^2(xyz) over x
B) 1 over (xyz)^2
C) x^3y^2z^3
D) x^4y^4z
3) What is the excluded value of the rational expression 2x+6 over 4x-8?
A) -3
B) -2
C) 0
D) 2
4) What is the simplified form of x^2-25 over x^2-3x-10
A) x-3 over x-5
B) (x-5)(x+5) over (x+3)(x-3)
C) x+5 over x+2
D) x-5 over x+2

Answer 2

\[x^4-81 \over x+3 \\
=\frac{(x^2+9)(x^2-9)}{x+3}\\
=\frac{(x^2+9)(x+3)(x-3)}{x+3}\\
=\]