Question

CxCxCxCxC= 10x9-8x7-C
C=?​

Answer 1

Răspuns:  c = 2

Explicație pas cu pas:

c×c×c×c×c = 10×9 - 8×7 - c

c⁵ + c = 90 - 56

c x ( c⁴ + 1 ) = 34

c x ( c⁴ + 1 ) = 2 × 17

c x ( c⁴ + 1 ) = 2 × ( 16 + 1 )

c x ( c⁴ + 1 ) = 2 × ( 2⁴ + 1 )

⇒ c = 2

2 × 2 × 2 × 2 × 2 + 2 = 32 + 2 = 34