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b) 8^4x+2 = 64^9
d) 16^505 – 4^1008 – 32^403 = 29 × 32^x
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Răspuns :

Elenaantondanielaask

Răspuns:

8⁴x + 2 = 64⁹

= 8⁴×8^× =64⁹ 64⁹ = (8×8)⁹ = 8⁷²

8⁴ ×8^× = 8⁷²

8^x= 8⁷²-⁴ = 8⁶⁸

x=68

16⁵⁰⁵ - 4¹⁰⁰⁸-32⁴⁰³=29×32^x

(4×4)⁵⁰⁵ -4¹⁰⁰⁸-(8×4)⁴⁰³ =29×32^×

4²⁰²⁰-4¹⁰⁰⁸- 4³²²⁴= 29×32^×

= 29× 4⁸*×

= 29 × 4⁸× 4^×

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