Question

Q.

f(x) = x² + 3x - 2x²
f(4!) =.....

(Special Nel Gajadi Pensi ;-;)​

Answer 1

Penjelasan dengan langkah-langkah:

f(4!) = 4!² + 3.4! - 2.4!

f(4!) = (4.3.2.1)² + 3.(4.3.2.1) - 2.(4.3.2.1)²

f(4!) = 24² + 3.24 - 2.24²

f(4!) = 576 + 72 - 2.576

f(4!) = 576 + 72 - 1.152

f(4!) = 648 - 1.152

f(4!) = -504

#koreksi

Answer 2

f(x) = x² + 3x - 2x²

f(4!) = (4!)² + 3(4!) - 2(4!)²

f(4!) = ( 4 × 3 × 2 × 1 )² + 3( 4 × 3 × 2 × 1 ) - 2( 4 × 3 × 2 × 1 )²

f(4!) = ( 12 × 2 )² + 3( 12 × 2 ) - 2( 12 × 2 )²

f(4!) = 24² + 3(24) - 2(24)²

f(4!) = ( 24 × 24 ) + ( 3 × 24 ) - 2(24²)

f(4!) = 576 + 72 - 2( 24 × 24 )

f(4!) = 576 + 72 - 2(576)

f(4!) = 576 + 72 - ( 2 × 576 )

f(4!) = 576 + 72 - 1.152

f(4!) = 648 - 1.152

f(4!) = - 504