f(x) = x2 + 1, jika f(a) = 10, hitung nilai a yang mungkin

Langsung aja y

f(x) = x² + 1

f(a) = a² + 1

10 = a² + 1

a² = 10 - 1

a = √9

a = 3

semoga berguna +_+

f(a) = 10
a² + 1 = 10
a² = 9
a = ±√9 = ±3
atau
a = -3 atau a = 3