Question

va rog repede îmi trebuie pentru mâine la ora 8:00​

Answer 1

a) [(1³+3²-2³)×5²-7²]×8²-2⁶=

[(1+9-8)×25-49]×64-64=

(2×25-49)×64-64=

(50-49)×64-64=

1×64-64=

64-64=

0.

b) (18³:18²-17⁴:17³+15:5)×2²-3²=

(18-17+3)×4-9=

(1+3)×4-9=

4×4-9=

16-9=

7.

c) {[(2¹⁰×9⁷):(2⁵×3⁶)²+28⁰]:5}⁵=

[(2¹⁶:2¹⁴+1):5]⁵=

(5:5)⁵=

1⁵=

1.

d) 742-3²×{446-2³×[271-5²×(3⁷×3⁸:3¹⁰:3³)]}=

742-9×{446-8×[271-25×(3¹⁵:3¹⁰:3³)]}=

742-9×{446-8×[271-25×(3⁵:3³)]}=

742-9×[446-8×(271-25×3²)]=

742-9×[446-8×(271-225)]=

742-9×(446-8×46)=

742-9×(446-368)=

742-9×78=

742-702=

40.

coroana?

Answer 2

$\it a)\ \ = [(1+9-8)\cdot25-49]\cdot64-64=(50-49)\cdot64-64=64-64=0\\ \\ \\ b)\ \ =(18-17+3)\cdot4-9=16-9=7$

$\it c)\ \ =\{\[(2^{10}\cdot9^7:(2^{10}\cdot9^6)+1)]:5\}^5=(10:5)^5=2^5=32$

$\it d)\ \ = 742-9[446-8\cdot(271-25\cdot9)]=742-9\cdot(446-8\cdot46)=\\ \\ =742-9\cdot(446-368)=742-9\cdot78=742-702=40$