Răspuns:
Explicație pas cu pas:
10.
a)
5 × { 7 + 3 × [ 46 + 6 × ( 27 - 32 : 4)]} = 2 435
= 5 × { 7 + 3 × [ 46 + 6 × ( 27 - 8 ) ] } =
= 5 × [ 7 + 3 × ( 46 + 6 × 19 ) ] =
= 5 × [ 7 + 3 × ( 46 + 114 )] =
= 5 × ( 7 + 3 × 160 ) =
= 5 × ( 7 + 480 ) =
= 5 × 487 =
= 2 435
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b) 2^2^4 = 2¹⁶ (2⁴=16)
(2⁸)² : 2¹⁶ x (3² - 1 ) - 3⁰ x 2² = 4
= 2⁸ˣ²⁻¹⁶ x ( 9 - 1 ) - 1 x 4 =
= 2¹⁶⁻¹⁶ x 8 - 4 =
= 2⁰ x 8 - 4 =
= 1 x 8 - 4 =
= 8 - 4 =
= 4
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c)
(3¹⁹ x 25⁹)² : 15³⁶ = 9
= ( 3 x 3¹⁸ x 5²ˣ⁹ )² : 15³⁶ =
= 3² x ( 3¹⁸ x 5¹⁸)² : 15³⁶ =
= 9 x (3 x 5 )¹⁸ˣ² : 15³⁶ =
= 9 x 15³⁶ x 1/15³⁶ =
= 9 x 1 =
= 9
