Х и -х при х=8

When x = 8, the expressions hx and -hx evaluate as follows:

• hx = 8 * x = 8 * 8 = 64
• (-hx) = -1 * hx = -1 * 64 = -64

So, when x = 8, hx is equal to 64 and -hx is equal to -64.