Question

Resolva a expressão.​

Answer 1

Resposta:

Explicação passo-a-passo:

$(\dfrac{1}{a}-\dfrac{1}{b})^{2} :\dfrac{(b-a)^{2}}{a^{2}b^{2}}=\dfrac{(\dfrac{1}{a}-\dfrac{1}{b})^{2}}{\dfrac{(b-a)^{2}}{a^{2}b^{2}}}=\dfrac{(\dfrac{b-a}{ab})^{2}}{\dfrac{(b-a)^{2}}{a^{2}b^{2}}}=\dfrac{\dfrac{(b-a)^{2}}{a^{2}b^{2}}}{\dfrac{(b-a)^{2}}{a^{2}b^{2}}}=1$