cho \(\frac{a}{b}=\frac{c}{d}.CM:\frac{a^{2020}}{b^{2020}}=\frac{\left(a-c\right)^{2020}}{\left(b-d\right)^{2020}}\)
b) \(\frac{a^{10}+b^{10}}{\left(a+b\right)^{10}}=\frac{c^{10}+d^{10}}{\left(c+d\right)^{10}}\)
mk dg gap 1h30 mk di hoc roi giai giup nha mk se tich