Question

Buna! Puteti sa ma ajutati cu calculul de mai jos care e la J) ? va rog , repede

Answer 1

j) 21²-2×{11²+21:(2-1)+2×[1+2³×(1+2)+2⁴-2¹]}=

=441-2×[121+21:1+2×(1+8×3+16-2)]=

=441-2×[121+21+2×(1+24+16-2)]=

=441-2×[121+21+2×(25+16-2)]=

=441-2×[121+21+2×(41-2)]=

=441-2×(121+21+2×39)=

=441-2×(121+21+78)=

=441-2×(142+78)=

=441-2×220=

=441-440=1

Answer 2

$21^2$-2*{ $11^2+21:(2-1)+2*[1+2^3*(1+2)+2^4-2^1]$ }

=441-2*[121+21:1+2*(1+8*3+16-2)]

=441-2*[121+21+2*(1+24+16-2)]

=441-2*(121+21+2*39)

=441-2*(121+21+78)

=441-2*220

=441-440

=1