Question

Write polynomials that represents the unknown length.

the polynomial is _____.
(simplify answer)​

Answer 1

Unknown length = 2x - 5

Explanation:

The unknown length = (4x - 9) - (2x - 4) (segment addition postulate)

4x - 9 - 2x + 4 (distributive property)

Add like terms

4x - 2x - 9 + 4

= 2x - 5