Question

Tìm x biết: (4⁵+4⁵+4⁵+4⁵)/(3⁵+3⁵+3⁵) . (6⁵+6⁵+6⁵+6⁵+6⁵+6⁵)/(2⁵+2⁵)=8^x

Answer 1

35 · 34 + 35 · 86 + 65 · 75 + 65 · 45

= 35 34 + 86 + 65 75 + 45

= 35 · 120 + 65 · 120

= 120 35 + 65

= 120 · 100

= 12000

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Answer 2

35 · 34 + 35 · 86 + 65 · 75 + 65 · 45

= 35 34 + 86 + 65 75 + 45

= 35 · 120 + 65 · 120

= 120 35 + 65

= 120 · 100

= 12000