Matematika Sekolah Menengah Atas f(x) = 19(x) × x + 5(x²)
f(8) = ??​

f(x) = 19(x) × x + 5(x²)
f(8) = ??​

~Penyelesaian~

f(x) = 19(x) × x + 5(x²) = . . . ?

=f(8) = 19(8) × (8) + 5(8²)

=f(8) = 152 × 8 + 5( 8 × 8 )

=f(8) = 152 × 8 + 5(64)

=f(8) = 1.216 + 5(64)

=f(8) = 1.216 + 320

=f(8) = 1.536

f(x) = 19(x) × x + 5(x²)

f(8) = 19(8) × (8) + 5(8²)

f(8) = 152 × 8 + 5( 8 × 8 )

f(8) = 152 × 8 + 5(64)

f(8) = 1.216 + 5(64)

f(8) = 1.216 + 320

f(8) = 1.536