Cara menyelesaikan soal |x+2| |x-2|=5?
Matematika
gitaputri07
Pertanyaan
Cara menyelesaikan soal |x+2| |x-2|=5?
1 Jawaban
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1. Jawaban Putrieli05
(x+2)(x-2) = 5
=> x^2 - 2x + 2x -4 = 5
=> x^2 - 4 = 5
=> x^2 = 5 + 4
=> x^2 = 9
=> x = 3
thx ^_^