Question

2,1
5. Calculeagă cu două ar odur
(-2)+(-1) +0+1+2=
1/4 x1/3 x1/2x1 x2x3 x4=​

Answer 1

Răspuns:

0

1

Explicație pas cu pas:

(-2)+(-1)+0+1+2=(-1)+0+1=0

1/4×1/3×1/2×1×2×3×4=1/4×1/3×1×3×4=1/4×1×4=1

Answer 2

$\displaystyle{ (-2) + (-1) + 0 + 1 + 2 = }$

$\displaystyle{ = -2 -1 + 1 + 2 }$

$\displaystyle{ =-(2 + 1)+ 3}$

$\displaystyle{ =-3 + 3 }$

$\boxed{=0}$

$\displaystyle{ \frac{1}{4} \cdot \frac{1}{3} \cdot \frac{1}{2} \cdot 1 \cdot 2 \cdot 3 \cdot 4 =}$

$\displaystyle{ =\frac{1}{12} \cdot \frac{1}{2} \cdot 2 \cdot 3 \cdot 4 }$

$\displaystyle{ =\frac{1}{24} \cdot 6 \cdot 4 }$

$\displaystyle{ =\frac{1}{24} \cdot 24 }$

$\displaystyle{ =\frac{24}{24} }$

$\boxed{=1}$