Which is the difference of 6 - (-1).

7

Step-by-step explanation:

The minus sign and negative will change into their opposite operation. So from minus to plus and from negative fo positive.

When subtracting the minus changes into a plus sign so you also have to change the sign of the subtrahend.

I tried explaining it the best that i can

all it means is function 3

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11