+1459 Fill in the blanks with numbers to make a true equation.
3x^2 + 12x - 4 - 2x^2 + 6x + 7 = ___ (x + ___ )^2 + ___
+1926 Let's combine all like terms first. We have
\(x^2+18x+3\)
We can't factor this equation yet, so let's complete the square. We get
\(x^2+18x+81+3-81\\ (x+9)^2-78\)
Thus, the first blank is 1, the second blank is 9, and the third blank is -78.
Thanks! :)
