8A³ –75 = 437 Berapakah nilai A yang memenuhi persamaan di samping ?
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[tex]8a {}^{3} - 75 = 437[/tex]
[tex]8a {}^{3} = 437 + 75[/tex]
[tex]8a {}^{3} = 512[/tex]
[tex]a {}^{3} = 64[/tex]
[tex]a = 4[/tex]
Cara Jawabb =
8a^3 - 75 = 437.
a = ³√437 + 75 ÷ 8.
a = ³√512 ÷ 8.
a = ³√64 = 4.
Pembuktian:
8.4^3 - 75.
8 x 64 - 75.
512 - 75.
= 437 ( Terbukti).
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