..no lo sé, pero como necesito puntos, ¿sí?
Following expressions will have negative product

Following expressions will have positive product

Further explanation:
We will see at each expression one by one
First expression is:

In the given expression one term is positive and one term is negative. The product of negative and positive terms is negative.
Second Expression is:

Both terms are negative and the product of two negative terms is positive.
Third Expression is:

The expression has one positive and one negative term so the product will be negative
Fourth Expression is:

Both terms are positive so the product will also be positive
Keywords: Product, Expressions
Learn more about expressions at:
#LearnwithBrainly
Answer:
1.21
Step-by-step explanation:
-0.29 + 1.5 = 1.21
If you add 21,42,50, and 205 you will get your answer