Answer:
-0.5 or -2/9
Explanation:
(-2x-1)(9x+2)
open the bracket
-18x² - 4x - 9x - 2
-18x²-13x-2
(18x²+9x)(+4x+2)
factorise
9x(2x+1) +2(2x+1)
(9x+2)(2x+1)
:separate the bracket and equate to 0
9x+2=0
collect like terms
9x= -2
divide through by 9
x= -2/9
or
4x = -2
divide through by 4
x = -2/4
: x = -0.5
answer = -0.5 or -2/9