The symbol means approximately equal to. Perfect squares factorise to the form (ax+b)^2 (in this case a=1), that should start you off.

Completing the square means you want to find something of the form (x+b)^2 = c

[b] skeleton:

Solve the equation 3y-1 + 2y + 3 = 5 that is 5y = 3

-3y+1 + 2y + 3 = 5 that is -y=1.

(There may be other cases e.g. 3y+1-2y-3=5 and -3y+1-2y-3=5, but these two are enough)

etc.

plot solutions on a number line and test to see if condition holds.

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