Question

x2 + 4x + 3

Answer 1

If you want to simplify it would be 6x+3

Answer 2

i mean x to the power of 2

Answer 3

x^2 - 4x = -3
x^2 - 4x + 4 = -3 + 4
(x - 2)(x - 2) = 1
(x - 2)^2 = 1
x - 2 = ± √1
x - 2 = ± 1
x = 2 ± 1

x = {1, 3}