Answer:
Step-by-step explanation:
4x² - 19x -5 =0
multiply coefficient of x² and the constant.
here coefficient of x² = 4 and constant = -5
4*-5 = -20
Coefficient of x = -19
so, when you multiply you have to get (-20) and when you subtract you should get -19
(-20)*1= -20
-20 + 1 = -19
4x² - 19x - 5 = 0
4x² - 20x + x - 1*5 = 0
4x(x - 5) + (x - 5) = 0
(x - 5)(4x + 1) = 0
