Question

Is 3(–2) + 7(2) equivalent to (–3)(–3) + (–1)(1)? Let negative numbers be represented with a "–" symbol and positive numbers be represented by "+" symbol. Use a pictorial model to justify your answer.

Answer 1

3(-2) + 7(2) = 8
(-3)(-3) + (-1)(1) = 8
yes