Question

Se considera numerele:x= 15x10+8x5+10, y=10:2+3^2-12:3,
z=11^2-5x2^2-13^0
Calculeaza x,y,z apoi efectueaza:
a) x-10•y-z
b)3•x-2•y+5•z
c)x+y+z+10•x•y•z
d)10•x-y•z+x•y

Answer 1

$x = 150 + 40 + 10 = 200 \\ y = 5 + 9 - 4 = 10 \\ z = 121 - 20 - 1 = 100$
a) x-10×y-z
$200 - 10 \times 10 - 100 = 200 - 100 - 100 = 0$
b) 3×x-2×y+5×z
$3 \times 200 - 2 \times 100 + 5 \times 10 = 600 - 200 + 50 = 450$
c) x+y+z+10×x×y×z
$200 + 10 + 100 + 10 \times 200 \times 10 \times 100 = 200 + 10 + 100 + 2000 \times 1000 = 200 + 10 + 100 + 2000000 = 2000310$
d) 10×x-y×z+x×y=
$10 \times 200 - 100 \times 10 + 200 \times 100 = 2000 - 1000 + 20000 = 1000 + 20000 = 21000$