Question

Paul creates the diagram to help him factor 4x2 + x – 5 by using double grouping. His diagram is incomplete.

Which terms should Paul write in squares M1 and M2?

a) 5x and −4x
b) –5x and 4x
c) –2x and 10x
d) 2x and −10x

Answer 1

A; 5x and −4x

Explanation:

Answer 2

5x and -4x

Explanation:

Because Paul is looking for M1 and M2 in order to get a total that is +x and a product that is equal to -20x^2, we can see that 5x and -4x help Paul get the products he wants.