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Mathematics 16 Online
OpenStudy (anonymous):

What is the simplified form of 3/2x-5 + 21/8x^2-14x-15?

OpenStudy (anonymous):

can you factorize 8x^2-14x-15?

OpenStudy (anonymous):

Would it be (-4x-3)(-2x+5)? :/

OpenStudy (helder_edwin):

yes u did it right

OpenStudy (dumbcow):

yep :) but factor out a negative so it works out better --> (4x+3)(2x-5)

OpenStudy (anonymous):

Okay.... whats next? :)

OpenStudy (dumbcow):

you need common denominator of (4x+3)(2x-5) so you need to multiply first denominator by (4x+3)

OpenStudy (anonymous):

numerator and denominator right?

OpenStudy (dumbcow):

correct

OpenStudy (anonymous):

12x+9/(4x+3)(2x-5) + 21/ (4x+3)(2x-5) right ?

OpenStudy (dumbcow):

yep now just combine it into 1 fraction, add the numerators but leave denominator alone

OpenStudy (anonymous):

12x+30/(4x+3)(2x-5)

OpenStudy (dumbcow):

correct

OpenStudy (anonymous):

OR 6(2x+5)/(4x+3)(2x-5) :) ?

OpenStudy (anonymous):

Thanks again!

OpenStudy (dumbcow):

welcome and yes you can factor it...bonus points

OpenStudy (dumbcow):

see if you can do the next one on your own...then have someone on here check your answer

OpenStudy (anonymous):

I'll come straight to you :)

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