Answer:
x=4
Explanation:
Usually what I do is sort of a guess and check, and this should be easy if your square roots memorized
First you know that x^2+5x is equaled to 36 because both sides of the triangle has a tick
I look at x squared first. You know the value for X has to be less than six because 6 squared is already 36.
Then I start plugging in values under 6 like 5, 4, 3 ex
When you plug in 5 you get 50, so we know we have to choose a lower value
When plugging in 4 you get 36
4 squared is 16, 5 x 4 = 20, 20+16 = 36