x = 6 or x = - 1
rearrange the equation into standard form and factorise
subtract ( - 2x - 4 ) from both sides
x² - 5x - 6 = 0 ← in standard form
the factors of - 6 which sum to - 5 are - 6 and + 1
(x - 6)(x + 1) = 0
equate each factor to zero and solve for x
x - 6 = 0 ⇒ x = 6
x + 1 = 0 ⇒ x = - 1