Subtract h - 1 from
h+4.
Oh+5
o h+5
1h
4
h+3

Step-by-step explanation:

(h + 4) - (h-1) = h + 4 + h*(-1) - 1*(-1)

                    = h + 4 - h + 1

                   = h - h + 4 + 1

                    = 0h + 5

x=30

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.