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

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