Question 755365
x^2+4x+3
(x + 3)(x + 1)
x times x = x^2
x times 1 = x
3 times x = 3x
3 times 1 = 3
Arrange in order
x^2 + x + 3x + 3
Collect like terms
x^2 + 4x + 3
Hope this helps.
:-)