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in Algebraic Expressions by (49.3k points)
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Find the product of the following pairs of monomials.

(i) 3 × 5x
(ii) – 5p, – 2q
(iii) 7l2, – 3n2
(iv) 6m, 3n
(v) – 5x2, – 2x

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Best answer

(i) 3 × 5x

= 3 × 5 × x

= 15x

(ii) – 5p,- 2q

= (- 5) × p × (- 2) × q

= (- 5) × (- 2) × p × q

= 10pq

(iii) 7l2, – 3n2

= 7 × l2 × (- 3) × n2

= 7 × (- 3) × l2 × n2

= – 21l2n2

(iv) 6m, 3n

= 6 × m × 3 × n

= 6 × 3 × m × n

= 18 mn

(v) – 5x2, – 2x

= (- 5) × x2 × (- 2) × x

= (- 5) × (- 2) × x2 × x

= 10x3

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