When P(x)=3x^2+2y-6 and Q(x)=x^2-6y+7 find P(x)+Q(x)
To find P(x) + Q(x), we add the corresponding terms of P(x) and Q(x):
P(x) + Q(x) = (3x^2 + 2y - 6) + (x^2 - 6y + 7)
= 3x^2 + x^2 + 2y - 6y - 6 + 7
Combining like terms, we get:
P(x) + Q(x) = 4x^2 - 4y + 1