Fill in the blanks with numbers to make a true equation.

3x^2 + 12x - 4 - 2x^2 + 6x + 7 = ___ (x + ___ )^2 + ___

BRAINBOLT Jun 13, 2024

#1**+1 **

First, we need to combine all like terms to see what we area dealing with. We have

\(x^{2}+18x+3\).

Now, completing the square for x by adding and subtracting 81, we get

\((x+9)^2-78\)

Thus, we can easily fill in the blanks now.

The first blank is 1

The second blank is 9

The third blank is -78.

Thanks! :)

NotThatSmart Jun 13, 2024

#1**+1 **

Best Answer

First, we need to combine all like terms to see what we area dealing with. We have

\(x^{2}+18x+3\).

Now, completing the square for x by adding and subtracting 81, we get

\((x+9)^2-78\)

Thus, we can easily fill in the blanks now.

The first blank is 1

The second blank is 9

The third blank is -78.

Thanks! :)

NotThatSmart Jun 13, 2024