8 x 4 − 48 x 3 = 56 x 2 A ss u m pt i o n x = 0 8 x 4 − 48 x 3 = 56 x 2 ∣ D i v i d e b y x 2 8 x 2 − 48 x = 56 ∣ S u b t r a c t 56 8 x 2 − 48 x − 56 = 0 ∣ D i v i d e b y 8 x 2 − 6 x − 7 = 0 x 2 − 7 x + x − 7 = 0 x ( x − 7 ) + 1 ( x − 7 ) = 0 Factorised:(x-7)(x+1)=0 x=7 or x=-1
8 x 4 − 48 x 3 = 56 x 2 8 x 4 − 48 x 3 − 56 x 2 = 0 8 x 2 ( x 2 − 6 x − 7 ) = 0
To factor the equation 8 x 4 − 48 x 3 = 56 x 2 , first move all terms to one side, then factor out the GCF, resulting in 8 x 2 ( x − 7 ) ( x + 1 ) = 0 . The solutions are x = 0 , x = 7 , and x = − 1 .
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Jawaban:kalikan angka dengan 100% untuk mendapat persentase, jadi persentase dari 2.500.000 adalah = 250.000.000%