f(x) = 19(x) × x + 5(x²)
f(8) = ??
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