giúp mik vs các cậu oi, mik xin c.ơn ah a. 2x^2/x-y.y/5x^3 b.15x/7y^3.2y^2/x^2 c.5x-15/4x+4:x^2-9/x^2+2x+1 d.6x+48/7x-7:x^2-64/x^2-2x+1 e.4x-24/5x+5:x^2-36/x^2+2x+1

giúp mik vs các cậu oi, mik xin c.ơn ah a. 2x^2/x-y.y/5x^3 b.15x/7y^3.2y^2/x^2 c.5x-15/4x+4:x^2-9/x^2+2x+1 d.6x+48/7x-7:x^2-64/x^2-2x+1 e.4x-24/5x+5:x^2-36/x^2+2x+1
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