Question

Which of the following expressions are equal to 10x^(2)y(0.2xy-0.7y) ?
(a) 20x^(3)y^(2) - 7x^(2)y^(2)
(b) 2x^(3)y^(2) - 10x^(2)y^(2)
(c) 2x^(3)y^(2) - 0.7x^(2)y^(2)
(d) 2x^(3)y^(2) - 7x^(2)y^(2)
How do I solve it? I need formula too.

Answer 1

Answer:

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