tolong koreksi ya , saya masih ragu dengan jawaban saya
f(x) = 9x – 6x + 100
f(3) + f(4) = 221 (apakah benar?)
Buktikan Jika Hasil nya 221
gunakan cara ya
cari dulu nilai f(3) nya terus f(4) nya
Hi , boleh minta tolong koreksi?
f(x) = 9x – 6x + 100
f(3) = 9(3) – 6(3) + 100
f(3) = ( 9 × 3 ) – ( 6 × 3 ) + 100
f(3) = 27 – 18 + 100
f(3) = 9 + 100
f(3) = 109
f(4) = 9(4) – 6(4) + 100
f(4) = ( 9 × 4 ) – ( 6 × 4 ) + 100
f(4) = 36 – 24 + 100
f(4) = 12 + 100
f(4) = 112
maka
f(3) + f(4) =
= 109 + 112
= 221
Maka hasilnya 221
》 Penyelesaian
_____________________________
f(x) = 9x – 6x + 100
f(3) = 9(3) – 6(3) + 100
f(3) = (9.3) – (6.3) + 100
f(3) = 27 – 18 + 100
f(3) = 9 + 100
f(3) = 109
f(x) = 9x – 6x + 100
f(4) = 9(4) – 6(4) + 100
f(4) = (9.4) – (6.4) + 100
f(4) = 36 – 24 + 100
f(4) = 12 + 100
f(4) = 112
= f(3) + f(4)
= 109 + 112
= 221 (benar)
