what is the answer? will give 100 points please help me

Answer:
x + 3 = √(11x + 5)
x² + 6x + 9 = 11x + 5
x² - 5x + 4 = 0
(x - 1)(x - 4) = 0
x = 1, 4
Checking these:
1 + 3 = √(11(1) + 5) 4 + 3 = √(11(4) + 5)
4 = √(11 + 5) 7 = √(44 + 5)
4 = √16 7 = √49
4 = 4 7 = 7
Both solutions check.