JAWABAN:
Matematika VIII SMP
→→ Persamaan Kuadrat ←←
Pembahasan :
x + 1 = 36 - x²
x² + x - 35 = 0
Berdasarkan Teorema Vietta
aβ = c/a
aβ = -35
a + β = -b/a
a + β = -1
Maka...
x² - (a + β - 3 + 2/5aβ)x + (a + β - 3 . 2/5aβ) = 0
x² - (-4 - 14)x + (-4 . (-14)) = 0
x² + 18x + 56 = 0
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