16-2+2=16
(x - 16)(x + 2) x = 16 or -2
16/21 minus two equals -1 5/21
It is: -16
-18
First, factorising, we get: x2 - 6x - 16 = (x - 8)(x + 2). Then, (x2 - 6x - 16) / (x - 8) = x + 2.
16
2
(-2)^4 = -2 x -2 x-2 x-2 = +16 ( a minus times a minus is plus)
Applying BODMAS: 16 - (2 x 2 x 4) = 16 - 16 = 0
10/4 - z - 8/16 = 21/2 - z - 1/2 = 2 - z
Without any parenthesis is: 92 - 2 * 15 + 16 - 8 = 59