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\left(\frac{1}{4}x\right)^{2}-\left(\frac{1}{3}y\right)^{2}
A multiplicación pódese transformar na diferencia de cadrados mediante a regra: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\left(\frac{1}{4}\right)^{2}x^{2}-\left(\frac{1}{3}y\right)^{2}
Expande \left(\frac{1}{4}x\right)^{2}.
\frac{1}{16}x^{2}-\left(\frac{1}{3}y\right)^{2}
Calcula \frac{1}{4} á potencia de 2 e obtén \frac{1}{16}.
\frac{1}{16}x^{2}-\left(\frac{1}{3}\right)^{2}y^{2}
Expande \left(\frac{1}{3}y\right)^{2}.
\frac{1}{16}x^{2}-\frac{1}{9}y^{2}
Calcula \frac{1}{3} á potencia de 2 e obtén \frac{1}{9}.
\left(\frac{1}{4}x\right)^{2}-\left(\frac{1}{3}y\right)^{2}
A multiplicación pódese transformar na diferencia de cadrados mediante a regra: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\left(\frac{1}{4}\right)^{2}x^{2}-\left(\frac{1}{3}y\right)^{2}
Expande \left(\frac{1}{4}x\right)^{2}.
\frac{1}{16}x^{2}-\left(\frac{1}{3}y\right)^{2}
Calcula \frac{1}{4} á potencia de 2 e obtén \frac{1}{16}.
\frac{1}{16}x^{2}-\left(\frac{1}{3}\right)^{2}y^{2}
Expande \left(\frac{1}{3}y\right)^{2}.
\frac{1}{16}x^{2}-\frac{1}{9}y^{2}
Calcula \frac{1}{3} á potencia de 2 e obtén \frac{1}{9}.