y2 +8y + 16 = 0 can factor to (y+4) (y+4) = 0 so y+4 = 0 so y = -4
4 + 0 = 4
5x2 + 20x = 0 5x(x + 4) = 0 x = 0 and -4
x2 + 13x + 36 = 0 so (x+4)(x+9) = 0 so that x = -4 or x = -9
0, of course! 4+-4=4-4. One negative plus one positive equals one negative.
4+4=8+0=8+1=9+1=10+0=10+1=11 It equals 11. You're welcome.
3+4=7+0=7
4Σ (12 - 4i)i=0
9
-4 + 4 = 0
-4+0-(-4)+(-4)-1= -4+0+4-4-1= -5
1 plus 1 plus 1 plus 1 equals 1 times 4. 1 times 4 equals 4. 4 minus 4 equals 0. 0
y2 +8y + 16 = 0 can factor to (y+4) (y+4) = 0 so y+4 = 0 so y = -4
The sum of 2 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 plus 0 equals 2.
That would still be 4. If it were times 0 it would be 0.
It is: 0+(-4) = -4
102