Question

ПОМОГИТЕ РЕШИТЬПЖ! при х=-0,12 при y=0,5

Answer 1

$frac{ frac{1}{ {x}^{2} } - frac{1}{ {y}^{2} } }{ frac{1}{x} - frac{1}{y} } times frac{ {x}^{2} {y}^{2} }{ x + y} = \ ( (frac{ {y}^{2} - {x}^{2} }{ {x}^{2} {y}^{2} } ) div ( frac{y - x}{x y} )) times frac{ {x}^{2} {y}^{2} }{ x+ y} = \ ( frac{(y - x)(y + x)}{ {x}^{2} {y}^{2} } times frac{xy}{y - x} ) times frac{ {x}^{2} {y}^{2} }{ x+ y} = \ frac{y + x}{xy} times frac{ {x}^{2} {y}^{2} }{x + y} = xy$
x=-0.12, y=0.5
xy=-0.12×0.5=-0.06

Answer 2

на фото..............