What do 6, 9 and 12 have in common? 3. -6y / 3 = -2y +9x / 3 = +3x +12z / 3 = +4z Since they share 3, write 3 outside the brackets, and your solutions inside the brackets: 3(3x-2y+12z)
-9x+6y = 54 6y = 9x+54 y = 1.5x+9 slope = 1.5
9x-6y-(12*2y)=0 9x-6y-24y=0 9x-30y=o 9x=30y 3x=10y y=0.3x x=10/3y
3x + 6y + 6x = 9x + 6y which can be factorised as 3(3x +2y)
It is 3(2y+5) when factorised
It is: 3y(2y-3x) when factored
16x^3 - 9x x (16x^2 - 9) x (4x +3 ) (4x - 3)
5x2 + 9x + 13 has no real factors.
11
2y2(3y - 1)
With the help of the quadratic equation formula
16