Question

queria saber o valor de:

($-\frac{1}{3}$) ⁻² - (-5) ² + (13207)⁰

Answer 1

$\left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0=\{(-3)^{-1}\}^2-25+1\\\\ \left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0=(-3)^{-2}-24\\\\ \left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0= \dfrac{1}{(-3)^2}-24\\\\ \left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0= \dfrac{1}{-9}-24\\\\ \left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0=- \dfrac{1}{9}-24\\\\ \Large\boxed{\left(- \dfrac{1}{3}\right)^{-2}-(-5)^2+(13.207)^0= -\dfrac{217}{9}}$