Multiply: (3pq – 4p^2 + 5q^2 + 7) by -7pq

Multiply:
(i) (3pq – 4p² + 5q² + 7) by -7pq
(ii) (x²y – xy + xy²) by – 15xyz

Solution:

Multiply:
(i) (5x² + 4x – 2) by (3 – x – 4x²)
(ii) (7x² + 12xy – 9y²) by (3x² – 5xy + 3y²)

Solution:

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