Question

(-3 -4) elevado a 2 :(-49)+ [20 - (10- raiz 81 elevado a 2 ) + (-2) elevado à 3 + (+3) elevado a 2 ]?

Answer 1

(-3-4)²:(-49)+[20-(10-√81)²+(-2)³+(+3)²]=

(-7)²:(-49)+[20-(10-9)²+(-8)+(+9)]=

(+49):(-49)+[20- 1²- 8 + 9]=

(-1) + [20-1-8+9]=

(-1) + [19-8+9]=

-1 + [11+9]=

-1 + 20=

+19