Answer:
the solutions are 1 and -7
Step-by-step explanation:
first add 14 to both sides
2x²+12x=14
2(x²+6x)=14 now find half of 6x and square it, then add it to both sides
2(x²+6x+9)=14+18(9 was multiplied by 2)
no factor
2(x+3)²=32 divide both sides by 2
(x+3)²=16 square root both sides
x+3=+/- 4 subtract 3
x= 4-3=1
x= -4-3=-7
