Question

fill in the blanks
x²+2x-168=0
x²+2x=_______
x²+2x+______=______
(x+_____)² =______, x+______=+_ _________
x+_______=_______ or x+_______=______
x=_____ x=_____​

Answer 1

Step-by-step explanation:

x²+2x-168=0

x²+2x= 168

x²+2x+ 1 = 169

(x+ 1 )² = 169 , x+ 1 =+_ √169

x+ 1 = 13 or x+ 1 = -13

x=. 12 , x= -14