Qz 76/∞
[tex] f(x) = \bold{x {}^{2} \div x + 4x {}^{5} \times x {}^{3} }[/tex]
[tex]f(x) = \bold{4}[/tex]
→ Gunakan cara
→ No asal
[tex] f(x) = \bold{x {}^{2} \div x + 4x {}^{5} \times x {}^{3} }[/tex]
[tex]f(x) = \bold{4}[/tex]
→ Gunakan cara
→ No asal
Penjelasan dengan langkah-langkah:
f(x)=x²:x+4x⁵ x x³
f(x)=4
.
x²-¹ +4x⁵. x³=4
x+4x⁵+³=4
x+4x⁸=4
4x⁸+x-4=0
a =4, b=1, c=-4
.
x1,2 = (-b ±√b²-4ac)/2a
x1,2=(-1±√(1² -4(4)(-4))/2(4)
x1,2=(-1±√(1+64))/8
x1,2=(-1±√65)/8
solusi:
x1 =(-1+√65)/8
x2=(-1-√65)/8