SOLUTION: Simplify the following algebraic fraction : (a^2-3a-4)/(a^2-4) x (2-a-a^2) /(a^2-1) answer: (4-a)/(a-2) how is this worked out ?

Question 1199801: Simplify the following algebraic fraction :
(a^2-3a-4)/(a^2-4) x (2-a-a^2) /(a^2-1)
answer: (4-a)/(a-2)
how is this worked out ?
Found 3 solutions by josgarithmetic, MathLover1, MathTherapy:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
(a^2-3a-4)/(a^2-4) x (2-a-a^2) /(a^2-1)

You need to know how to factorize degree-two trinomials and difference of squares. (and understand convenience of -1 as a factor).

Look for and cancel factors of 1, numerator and denominator same factor

and then,.....!
PROBLEM: There appears to be one or two mistakes there. Pure text is very difficult to work with. This kind of arithmetic works better on paper with pencil.
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Simplify the following algebraic fraction : (a^2-3a-4)/(a^2-4) x (2-a-a^2) /(a^2-1) answer: (4-a)/(a-2) how is this worked out ? What have you tried? Nothing I guess! ------ Factoring ALL numerators and denominators ------ Multiplying 2nd fraction's numerator by - 1 to match factor in denominator

RELATED QUESTIONS
2(A+4)=3A-1 (answered by funmath)
I worked the following problem and came up with -216a^2. Simplify: (-2a^4)^3(3a^-5)^2 (answered by josmiceli)
I'm trying to simplify a Complex Algebraic Fraction: X2 - 3X+2 _________ X-4... (answered by Fombitz)
please help me simplify the following fraction:... (answered by Fombitz)
Is this problem factored completely correctly? 3a^3+6a^2-2a-4 (3a^3)+(-2a-4)... (answered by scott8148)
2(a+1)+4(3a-1)-2(a-2)= (answered by tommyt3rd)
4(3a) + 2(a +... (answered by jim_thompson5910)
a^4-3a^2-10 (answered by Alan3354)
simplify 3a/a+3 -... (answered by josgarithmetic)