3
x(x2+5x+6)
5x + (3y-x) + (10-2y) = 5x + 3y - x + 10 -2y = 5x - x + 3y - 2y + 10 = 4x + y +10
5x-4y+9y+x-9+7 = 5x + x - 4y + 9y - 9 + 7 = 6x + 5y - 2 ■
If you mean: 2.5x+x = 5x-3 then x = 2
3
3x - 5x + x = -x
5x+2=x+10 5x-x=10-2 4x=8 x=2
5x+x >100
If: x+9+5x = 21+2x Then: x = 3
If you mean: x^2 +5x +4 then it is (x+4)(x+1) when factored
x(x2+5x+6)
x=6
5x + (3y-x) + (10-2y) = 5x + 3y - x + 10 -2y = 5x - x + 3y - 2y + 10 = 4x + y +10
5x + x - 6x + 2x = 2x
x2 + 5x + 6 = (x + 2)(x + 3)
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3