The product of two consecutive odd integers is 2,115. find the integers. which of the following quadratic equations could be used to solve the word problem?
a. x² + x - 2,115 = 0
b. x² + 2x - 2,115 = 0
c. x² + 2x + 2,115 = 0

Hello,

Answer B

Let x the first number
 x+2 the second

x*(x+2)=2115
==>x²+2x-2115=0
==>x=45 or x=-47
==>(x=45 and x+2=47)  or (x=47 and x+2=-45)

B is the correct answer
Anything within parenthesis completed first. So 6(20+1) is equal to 6(21).
A isn’t right because 21-1=20. 6(20) is not equal to 6(21)
C isn’t right because 20-1=19. 6(19) and 6(21) aren’t equal.
E and D aren’t right because 3+2=5. 5(22) and 5(21) are not equal to 6(21).
Hope this helped!!