Evalwa
-\frac{4xy}{x^{2}-y^{2}}
Espandi
-\frac{4xy}{x^{2}-y^{2}}
Sehem
Ikkupjat fuq il-klibbord
\frac{\left(x-y\right)\left(x-y\right)}{\left(x+y\right)\left(x-y\right)}-\frac{\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)}
Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. L-inqas multiplu komuni ta' x+y u x-y huwa \left(x+y\right)\left(x-y\right). Immultiplika \frac{x-y}{x+y} b'\frac{x-y}{x-y}. Immultiplika \frac{x+y}{x-y} b'\frac{x+y}{x+y}.
\frac{\left(x-y\right)\left(x-y\right)-\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)}
Billi \frac{\left(x-y\right)\left(x-y\right)}{\left(x+y\right)\left(x-y\right)} u \frac{\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.
\frac{x^{2}-xy-xy+y^{2}-x^{2}-xy-xy-y^{2}}{\left(x+y\right)\left(x-y\right)}
Agħmel il-multiplikazzjonijiet fi \left(x-y\right)\left(x-y\right)-\left(x+y\right)\left(x+y\right).
\frac{-4xy}{\left(x+y\right)\left(x-y\right)}
Ikkombina termini simili f'x^{2}-xy-xy+y^{2}-x^{2}-xy-xy-y^{2}.
\frac{-4xy}{x^{2}-y^{2}}
Espandi \left(x+y\right)\left(x-y\right).
\frac{\left(x-y\right)\left(x-y\right)}{\left(x+y\right)\left(x-y\right)}-\frac{\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)}
Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. L-inqas multiplu komuni ta' x+y u x-y huwa \left(x+y\right)\left(x-y\right). Immultiplika \frac{x-y}{x+y} b'\frac{x-y}{x-y}. Immultiplika \frac{x+y}{x-y} b'\frac{x+y}{x+y}.
\frac{\left(x-y\right)\left(x-y\right)-\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)}
Billi \frac{\left(x-y\right)\left(x-y\right)}{\left(x+y\right)\left(x-y\right)} u \frac{\left(x+y\right)\left(x+y\right)}{\left(x+y\right)\left(x-y\right)} għandhom l-istess denominatur, naqqashom billi tnaqqas in-numeraturi tagħhom.
\frac{x^{2}-xy-xy+y^{2}-x^{2}-xy-xy-y^{2}}{\left(x+y\right)\left(x-y\right)}
Agħmel il-multiplikazzjonijiet fi \left(x-y\right)\left(x-y\right)-\left(x+y\right)\left(x+y\right).
\frac{-4xy}{\left(x+y\right)\left(x-y\right)}
Ikkombina termini simili f'x^{2}-xy-xy+y^{2}-x^{2}-xy-xy-y^{2}.
\frac{-4xy}{x^{2}-y^{2}}
Espandi \left(x+y\right)\left(x-y\right).
Eżempji
Ekwazzjoni kwadratika
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometrija
4 \sin \theta \cos \theta = 2 \sin \theta
Ekwazzjoni lineari
y = 3x + 4
Aritmetika
699 * 533
Matriċi
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Ekwazzjoni simultanja
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differenzazzjoni
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integrazzjoni
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limiti
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}