Answer:
360,000
Step-by-step explanation:
The exclamation point is factorial:
9! = 9×8×7×6×5×4×3×2×1 = 362880
5! = 5×4×3×2×1 = 120
4! = 4×3×2×1 = 24
362880 - 120× 24 = 360000
-2x(5x²-6)
hope this helps you
x=2
Step-by-step explanation
13 Compute using the 2 right angles, we know that m<FIG=90* and