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=> (2²) pangkat x+1 = 2⁷
=> 2 pangkat 2x+2 = 2⁷
=> 2x+2 = 7
=> 2x = 5
=> x = 5/2
2. √5a² ⁴√a³√a = (5a² ⁴√a³√a)
= (5a² ⁴√a³ (a pangkat 1/2)) pangkat 1/2
= ( 5a² ⁴√a pangkat 7/2) pangkat 1/2
= ( 5a² (a pangkat 7/8) pangkat 1/2
= (5 a pangkat 23/8) pangkat 1/2
= √5 a pangkat 23/16 (kalo ga salah)