1/ 53. (-15) +(-15) 47

2/ -43. 92 – 46. 27 + 46. 41

3/ – 72 (15 – 49) + 15 (– 56 + 72)

4/ (-2⁴). 17. (-3)⁰. (-5)⁶.(-1²ⁿ) (n E N)

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Đáp án:

1.

$53.(-15)+(-15).47$

$=-15.(53+47)$

$=-15.100$

$=-1500$.

2.

$-43.92-46.27+46.41$

$=-43.92-(46.27-46.41)$

$=-43.92-46.(27-41)$

$=-43.2.46-46.(-14)$

$=-86.46-46.(-14)$

$=-86.46+14.46$

$=46.(-86+14)$

$=46.(-72)$

$=-3312$.

3.

$-72.(15-49)+15.(-56+72)$

$=-72.15-(-72).49+15.(-56)+15.72$

$=(-72.15+15.72)-(-72).49+15.(-56)$

$=0+72.49+15.(-56)$

$=3528-840$

$=2688$

4.

$-2^4.17.\!\left(-3\right)^0.\!\left(-5\right)^6.\!\left(-1^{2n}\right)$

$=-16.17.1.15625.(-1)$

$=-272.(-15625)$

$=4250000$.

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