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Verified answer
Y = x^2 + bx + 5Untuk y = 5, diperoleh
5 = x^2 + bx + 5
0 = x^2 + bx
0 = x(x+b)
0 = x + b
b = -x
Jadi, nilai b adalah -x.
Verified answer
Mapel : MatematikaKelas : VIII SMP
Bab : Persamaan Kuadrat
Pembahasan :
y = x² + bx + 5
5 = x² + bx + 5
x² + bx = 0
x(x + b) = 0
x = 0
x = -b
B = x = 0