：√﹙﹣3﹚²=___ ,±√3²=___ ,﹣√3²=___ .

：√﹙﹣3﹚²=___ ,±√3²=___ ,﹣√3²=___ .

√（-3）²=√9=3
±√3²=±√9=±3
-√3²=-√9=-3

It is known that the quadratic equation x & # 178; - 4x + k = 0 has two unequal real roots
1. Find the value range of K
2. If K is the largest integer that meets the condition, and the quadratic equation of one variable X & # 178; - 4x + k = 0 and X & # 178; + MX = 0 have the same root, find the value of m at this time
In the second question, change to X & # 178; + MX-1 = 0

(1) Because the equation has two unequal real roots, so △ > 0, so 4 & # 178; - 4K > 0, so K < 4 (2) because K is the largest integer, so k = 3, so x & # 178; - 4x + 3 = 0x = 1 or x = 3, when x = 1, 1 + m - 1 = 0, M = 0, when x = 3, 9 + 3M -

1、（a+b）²-9c² 2、16（x+y）²-25（x-y）²
3. A & # 178; - 144b & # 178; 4, - 16 / 1 A & # 178; + B & # 178; 5, - X's fourth power + X & # 178; Y & # 178; (do with formula method,

This is the first time that we want to get a-h-178; - 144b & \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\c] = (a + b-3c) (a + B + 3C) 16 (x + y) & 1