Lee's steps to evaluate the expression 12n – 12 ÷ 12 when n = 4 are shown below. 12n – 12 ÷ 12 when n = 4
12 × 4 = 48
48 – 12 = 36
36 ÷ 12 = 3

What should Lee have done differently to evaluate the expression correctly?

step-by-step explanation:

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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.