29/50 (50 point) 6!! × 2! + 5! = …. – 5³ = …. ​

Jawaban:

6!! × 2! + 5! =

(6×(6-2)×(6-4)) × (2×1) + (5×4×3×2×1)

(6×4×2) × 2 + (20×6)

(24×2)×2 + 120

(48×2) + 120

96 + 120

= 216

– 5³ = ….

(-5) × (-5) × (-5)

25 × (-5)

= -125

______

6!! × 2! + 5! – 5^3

216 – 125

= 91

6!! × 2! + 5!

= (6.4.2) × (2.1) + (5.4.3.2.1)

= (24.2) × 2 + (20.6.1)

= 48 × 2 + (120.1)

= (48 × 2) + 120

= (48+48) + 120

= 96 + 120

= 216

_____

216 – 5^3

= 216 – (5.5.5)

= 216 – (25.5)

= 216 – 125

= 91