The coefficient of the x-term is -3. Add the square of half of that.
.. (-3/2)² = 9/4 . . . . . . the number you need to add.
x² -3x +9/4 = (x -3/2)²
_____
If the x² term has a coefficient other than 1, you need to factor that out first and deal with the remaining binomial. For example,
.. 2x² -6x = 2(x² -3x)
For this you would need to add 9/4 inside parentheses to get
.. 2(x² -3x +9/4) = 2(x -3/2)²
Of course, to keep the original value, you would need to subtract 2*(9/4) outside parentheses.
.. 2x² -6x = 2(x -3/2)² -9/2
To find the area, do 2+2+2+4+5
To find the volume, do 2×2×2×4×5
1. Q
2. QS
3. RST
4. Q
(I'm not sure that I am right.)
You lost 4 but you don't loose anymore
You won 6 and you keep on winning more games.
Since you don't loose anymore games, in the ratio 2:1, you would replace the "1" with 4 and replace the 2 with 6+n.
the ratio is currently 6+n:4
Note that (6+n) has to be twice as much as 4.
The number twice as much as 4 is 8
therefore, 6+n is 8
and n = 2
You would have to win 2 more rounds.
