Faktor dari2a^2-32 =

=> 2a^2 - 32 = 0
◆◆◆◆◆◆◆◆◆◆◆◆◆◆ [ : 2 ]
=> a^2 - 16
=> (a - 4) (a + 4)

Pembuktian :
=> a^2 + 4a - 4a - 16
=> a^2 - 16 SAMA

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