4x-12/x^{2 +4x-21}

4x-12/x^{2 +4x-21}

Tutors, please sign in to answer this question.

If we assume that Nataliya is right and the question is

(4x - 12) / (x2 + 4x - 21)

We can simplify it like so

(2x-3.46)/(x+2x-4.58): This takes the square root of your original equation

Zoltan, if I am right, then answer will be * 3 / (x + 7) * :)

Can you work that out for me? It seems a bit at odds with the x squared term. :)

Original: (4x-12)/(x^2+4x-21)

Factor Top: [4(x-3)]/(x^2+4x-21)

Factor Bottom: [4(x-3)]/[(x-3)(x+7)]

Cancel like terms: [4(x-3)]/[(x-3)(x+7)]

Simplified term: 4/(x+7)

Gali N.

Trilingual Hebrew/French/English tutor

Brooklyn, NY

5.0
(247 ratings)

James M.

Inquisitive PhD student of Math and Music at CUNY Graduate Center

Middle Village, NY

4.8
(107 ratings)

Jeffrey G.

Former Med-Student turned Professional Science Tutor

Brooklyn, NY

5.0
(373 ratings)

## Comments

Olalekan, you have to use parenthesis! Is your question to simplify the expression

(4x - 12) / (x

^{2}+ 4x - 21) ?