Question

Other please help!!
y = x2 + 4x + 8

Answer 1

Possible intermediate steps:
x^2+4 x+8 = 0
Subtract 8 from both sides:
x^2+4 x = -8
Add 4 to both sides:
x^2+4 x+4 = -4
Factor the left hand side:
(x+2)^2 = -4
Take the square root of both sides:
sqrt(x+2) = 2 i
Eliminate the absolute value:
x+2 = -2 i or x+2 = 2 i
Subtract 2 from both sides:
x = -2-2 i or x+2 = 2 i
Subtract 2 from both sides:
x = -2-2 i or x = -2+2 i

Answer 2

thank u also need help with this one please help
y = x2 - 2x + 5

Answer 3

Possible intermediate steps:
x^2-2 x+5 = 0
Subtract 5 from both sides:
x^2-2 x = -5
Add 1 to both sides:
x^2-2 x+1 = -4
Factor the left hand side:
(x-1)^2 = -4
Take the square root of both sides:
sqrt(x-1) = 2 i
Eliminate the absolute value:
x-1 = -2 i or x-1 = 2 i
Add 1 to both sides:
x = 1-2 i or x-1 = 2 i
Add 1 to both sides:
x = 1-2 i or x = 1+2 i

Answer 4

is this ur ans!!!!!

Answer 5

ohh kk thank u!!...