Question

$if \: x = 3 + 2 \sqrt{2} \: then \: {x}^{2} - 6x + 5$
please help me with this​

Answer 1

Answer:

4

Step-by-step explanation:

$x = 3 + 2\sqrt{2} \\x = 3 + 2(1.41421356237)\\x = 3 + 2.82842712474\\x = 5.82842712474\\\\x^{2} - 6x + 5\\5.82842712474^{2} - 6(5.82842712474) + 5\\(33.9705627484 - 34.9705627484) + 5\\- 1 + 5 = 4$