Question

F(X) = x² + 8x² - 2! × 5!!
F(9) = . . .?

Note: Ada yang mau cp?​

Answer 1

f(x) = x² + 8x² - 2! × 5!!

f(9) = 9² + 8(9)² - (2 × 1) × (5 × 3 × 1)

f(9) = (9 × 9) + 8(9 × 9) - 2 × (15 × 1)

f(9) = 81 + 8(81) - 2 × 15

f(9) = 81 + 648 - 2 × 15

f(9) = 81 + 648 - 30

f(9) = 729 - 30

f(9) =699

Answer 2

Penjelasan dengan langkah-langkah:

f(x) = x² + 8x² - 2! × 5!!

f(9) = 9² + 8( 9×9 ) - 2! × 5!!

f(9) = ( 9×9 ) + 8( 81 ) - ( 2×1 ) × ( 5×3×1 )

f(9) = 81 + ( 8×81 ) - 2 × 15

f(9) = 81 + 648 - 2 × 15

f(9) = 81 + 648 - ( 2 × 15 )

f(9) = 81 + 648 - 30

f(9) = 729 - 30

f(9) = 699