Algebra-find product-1

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Find the product.

1) -3x⁵ (10x⁵ – 9x³ -12)

Solution: -3x⁵ (10x⁵ – 9x³ -12)

= -30x¹⁰ + 27x⁸ + 36x⁵

2) 7xy² (3x²y² + 5xy)

Solution: 7xy² (3x²y² + 5xy)

= 21x²y² + 35 x²y³

3) (x² – 3y²) ²

Solution:(x² – 3y²) ²

= (x²) ² + (3y²) ² – 2*x²*3y²

= x⁴ +9y⁴ – 6x²y²

4) 2x⁷ ( 11x⁶ + 7x³ – 2)

Solution: 2x⁷ ( 11x⁶ + 7x³ – 2)

= 22x¹³ +14x¹⁰ – 4x⁷

5) ( - 9x⁶y ) ( - 3x³y⁴ )

Solution: ( - 9x⁶y ) ( - 3x³y⁴ )

= 27x⁹y⁵