Question

Chin made an error in his chart showing the multiplication of the binomial by the trinomial.



Which change can be made to correct the chart?

The expression 3x3 should be 3x2.
The expression 6x should be 6xy.
The expression x2y should be x2y2.
The expression 4y should be 4y2.

Answer 1

6x should be 6xy.

Reason: the middle term is missing the y. In the products from multiplying the binomial by the trinomial the y must appear (e.g., 6xy times x gives 6x^2y), so replacing 6x with 6xy corrects the chart.