Question

Diketahui fungsi h(x) = x²-4,jika h(a) = -3 , maka nilai a?

Answer 1

H(x) = x² - 4
h(a) = - 3

h(x) = x² - 4
- 3 = x² - 4
x² = 4 - 3
x² = 1
x = √1
x = 1

Answer 2

H(x) = x² - 4
h(a) = a² - 4
-3 = a² - 4
-3 + 4 = a²
1 = a²
√1 = √a²
1 = a

Maka nilai a adalah 1.