Answer:
x = 19, -17.5
Step-by-step explanation:
The first term for some negative number = x
the second term is thrice less than twice that number = 2x - 3
The product is 665 : x( 2x-3) = 665
= 2x^2 - 3x -665 = 0
divided by 2,
quadratic equation,
x = 19, -17.5