Pls me step by step faster if you can

1. a)x+1< 21
4

i don't know if you van understand but is the line between the 21 and 4 but cannot do it

Step-by-step explanation:

If you meant to type    x+1<21, then we simplify this inequality by subtracting 1 from both sides, ending up with x < 20.

I do not recognize what your "4" represents.

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

fd

step-by-step explanation: