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Verified answer
Mapel : MatematikaKelas : VIII SMP
Bab : Persaaman Kuadrat
Rumus dasar :
a² + b² = (a + b)² - 2ab
a² - b² = (a + b)(a - b)
Pembahasan :
(x - 3)² + (x + 1)² = (x - 2)² + (x + 3)²
(x - 3 + x + 1)² - 2(x - 3 + x + 1) = (x - 2 + x + 3)² - 2(x - 2 + x + 3)
(2x - 2)² - 2(2x - 2) = (2x + 1)² - 2(2x + 1)
(2x - 2)² - (2x + 1)² = -2(2x + 1) + 2(2x - 2)
(2x - 2 - 2x - 1)(2x - 2 + 2x + 1) = -4x - 2 + 4x - 4
(-3)(4x - 1) = -6
-12x + 3 = -6
12x = 3 + 6
12x = 9
x = 9/12
x = 3/4
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