Question

-2×[3-(-6)toată paranteza la a 2a ÷(-9)]-2×[5-(-7)] AJUTOR VA ROG

Answer 1

$2\times \:\left[3-\left(-6\right)^2\div \left(-9\right)\right]-2\times \:\left[5-\left(-7\right)\right]=-10$

$\left[3-\left(-6\right)^2\div \left(-9\right)\right] = 3-\left(-6\right)^2\div \left(-9\right) =3-36\div \left(-9\right) =3-\left(-4\right) =7$

$=2\times \:7-2\times \:\left[5-\left(-7\right)\right]$

$\:\left[5-\left(-7\right)\right]\::\quad 12 = 5-\left(-7\right) =5+7 = 12$

$=2\times \:7-2\times \:12 =14-2\times \:12 =14-24 =-10$

Sper că te-am ajutat!

Succes!