Question

va rog repede 1 și 2​

Answer 1

1. a) 2³+4⁰-3²=

8+1-9=

0.

b) (8²+15²):17²=

(64+225):289=

289:289=

1.

c) (2×2⁵×2¹⁵):2¹⁸=

2²¹:2¹⁸=

2³=

8.

d) (3⁷)⁸:3⁵⁴=

3⁵⁶:3⁵⁴=

3²=

9.

2. a)50-40[11-(256+44):100]=

10[11-300:100]=

10[11-10]=

10×1=

10.

b) 3×16+{7×[6-(4+2×3):5]-8}:10=

48+[7×(6-10:5)-8]:10=

48+(7×4-8):10=

48+(28-8):10=

48+20:10=

48+2=

50.

Answer 2

Răspuns:

1. a) 8+1-9=9-9=0

b) (64+225)÷289=289÷289=1

c)

${2}^{21} \div {2}^{18} = {2}^{3}$

d)

${3}^{56} \div {3}^{54} = {3}^{2}$

2.a) 50-40÷[11-(256+44)÷100]=50-40÷(11-300÷100)=50-40÷(11-3)=50-40÷8=50-5=45

b) 3×16+{7×[6-(4+2×3)÷5]-8}÷10= 48+{7×[6-(4+6)÷5]-8}÷10=48+[7×(6-10÷5)-8]÷10=48+[7×(6-2)-8]÷10=48+(7×4-8)÷10=48+(28-8)÷10=48+20÷10=48+2=50