+0  
 
0
1
1
avatar+447 

Fill in the blanks with numbers to make a true equation.
3x^2 + 12x - 4 - 2x^2 + 6x + 7 = ___ (x + ___ )^2 + ___

 Jul 10, 2024
 #1
avatar+1271 
+1

First let's combine all like terms and simplify. We have'

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

 

Now, we complete the square for x. Since it is 18x, we add and subtract 81 from the equation. We have

\(x^2+18x+81+3x-81\\ (x+9)^2-78\)

 

Thus, the first blank is 1, the second blank is 9, and the third blank is -78. 

 

Thanks! :)

 Jul 10, 2024

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