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algebraic fractions

hi guys, i got a maths homework due for tomorrow, but have no clue on how to do it:frown:please help. (the pics are attached)the teacher gave us formulas which we were somehow meant to use, written in blackthe questions are written in blue,thanks in advance:redface:
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Original post by I.sarkar
hi guys, i got a maths homework due for tomorrow, but have no clue on how to do it:frown:please help. (the pics are attached)the teacher gave us formulas which we were somehow meant to use, written in blackthe questions are written in blue,thanks in advance:redface:


Ok for the first one can you take out common factors on both of the fractions? Like the 3a^2+3ab+3b^2 could be written as 3(a^2+ab+b^2).
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I.sarkar
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Original post by rayquaza17
Ok for the first one can you take out common factors on both of the fractions? Like the 3a^2+3ab+3b^2 could be written as 3(a^2+ab+b^2).


but can u cancel out when its in that form?
Original post by I.sarkar
but can u cancel out when its in that form?


Yeah because you're dividing it by something that can be factorised as 9(....) :smile:

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