Question

What side lengths should be used to model a rectangle with an area of x2 + 3x – 10 square units?

Answer 1

( x + 5 ) and ( x – 2 )

You can factor the above binomial and solve for zero. You'll have x^2 + 5x – 2x – 10, which simplifies to your original x^2 + 3x – 10

Answer 2

your answer on e2020 would be B