Algebra-1

( −x² + 5)(4x⁴ − 3x²)

Expanding the expression:

= (−x²)(4x⁴) + (−x²)(−3x²) + (5)(4x⁴) + (5)(−3x²)

= −4x⁶ + 3x⁴ + 20x⁴ − 15x²

Now, let's combine like terms:

= −4x⁶ + (3x⁴ + 20x⁴) − 15x²

= −4x⁶ + ...