Answer:
Step-by-step explanation:
1) Expand the expression, using (a + b) ^ 2 = a ^ 2 + 2ab + b ^ 2, develop the expression,
y = x ^ 2 + 2x + 1 + 3
2) Add the numbers (1 + 3), getting:
y = x ^ 2 + 2x + 4
3) The final solution of y is:
y = (x+1)^2 + 3
