Answer:
Step-by-step explanation:
Step-1 : Multiply the coefficient of the first term by the constant 1 • -5 = -5
Step-2 : Find two factors of -5 whose sum equals the coefficient of the middle term, which is 16 .
-5 + 1 = -4
-1 + 5 = 4
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored