1) 20a³ × 5a5a5a² = 20a³ × 25a² = 500a^5
2) 3x6y33x⁶y³3x6y3 × −1xy2-1xy²−1xy2 = -3x⁷y⁵
3) −0.55x24−2+kan−k-0.55x²⁴-² + ka^n-k−0.55x24−2+kan−k × 40an+1×xk+3n+440an+¹ × xk+3n+440an+1×xk+3n+4 = -22x^24 + kan−ka^n-kan−k × 40a^n+1n+1n+1 × x^k+3n+4k+3n+4k+3n+4
1) 20a³ × 5a5a5a² = 20a³ × 25a² = 500a^5
2) 3x6y33x⁶y³3x6y3 × −1xy2-1xy²−1xy2 = -3x⁷y⁵
3) −0.55x24−2+kan−k-0.55x²⁴-² + ka^n-k−0.55x24−2+kan−k × 40an+1×xk+3n+440an+¹ × xk+3n+440an+1×xk+3n+4 = -22x^24 + kan−ka^n-kan−k × 40a^n+1n+1n+1 × x^k+3n+4k+3n+4k+3n+4