Question

simplifique as expressões: a) y²-16/y+4 b) 48xy²-30x²y/xy c) x²-12x+36/x-6

Answer 1

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Simplifique:

$a) \frac{y^2-16}{y+4} = \frac{\not(y+4)(y-4)}{\not(y+4)} =(y-4) \\ \\ b)~~ \frac{48xy^2-30x^2y}{xy} = \frac{\not xy(48y-30x)}{\not xy} =6(8y-5x) \\ \\ c)~~ \frac{x^2-12x+36}{x-6} = \frac{(x-6)^\not2}{\not(x-6)} =(x-6)$