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3x^2-9x-12 / 6x^2+9x+3

Algebra
Tutor: None Selected Time limit: 0 Hours

Simplify. Idenfy and x-values for which the expression is undefined.

3x^2-9x-12 / 6x^2+9x+3

Nov 13th, 2014

(3x2-9x-12) /( 6x2+9x+3)= (3x2-12x+3x-12)/[ ( 6x2+6x+3x+3)]

= [3x(x-4)+3(x-4)]/[6x(x+1)+3(x+1)]

=[(x-4)(3x+3)]/[(6x+3)(x+1)]

This is not defined for x = -1 and 6x = -3 or x= -1/2

If x not equal to -1 , this becomes 3(x-4)/(6x+3)

This is not defined for x= -1/2



Nov 13th, 2014

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Nov 13th, 2014
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