+282 Fill in the blanks with numbers to make a true equation.
3x^2 + 12x - 4 - 2x^2 + 6x + 7 = ___ (x + ___ )^2 + ___
+1950 First, we need to combine all like terms to see what we area dealing with. We have
x2+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! :)
+1950 First, we need to combine all like terms to see what we area dealing with. We have
x2+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! :)
