A man is standing next to a tree. The shadow cast by the tree is four times longer than the man’s shadow. If the man is 2 meters tall, how tall is the tree?

I think the tall of the tree is eight meters

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