Question

mă ajutați vă rog!!!! doar cele încercuite

Answer 1

a) (-4)⁷³: 2¹⁴⁴-25¹²:5²³= (-2)²ˣ⁷³: 2¹⁴⁴ - 5²ˣ¹²: 5²³= (-2)¹⁴⁶⁻¹⁴⁴ - 5²⁴⁻²³=-2²-5=-4-5= -9

b) [(-3)² - (-3)⁸⁷ : (-3)⁸⁵]:5= [ (-3)²- (-3)⁸⁷⁻⁸⁵]:5= [(-3)²-(-3)²]:5= 0

c) {(-2)² + [(-2)²]⁹⁵:[(-2)⁹⁴]²}:8= {(-2)²+ (-2)¹⁹⁰⁻¹⁸⁸}:= [(-2)²+(-2)²]:8= (-4-4):8=(-8):8=-1

d) 5² + [(-2)⁷x25x(-3)²] :[9 x (-4)²x5]=5²+ [(-2)⁷x5²x(-3)²]:[3²x(-2)⁴x5]=5²+[(-2)⁷⁻⁴x 5²⁻¹x(-1)]=5²+[(-2)³x5x(-1)]=25+40=65

Answer 2

(-4)^73:2^144-25^12:5^23:
-4^73:2^144-(5^2)^12:5^23
-(2^2)^73:2^144-5^24:5^23
-2^146:2^144-5
-2^2-5
-4-5
-9
= -9