(x+5)²=9

(x+5)²=9

(x+5)²=9
x+5=±3
x=-5±3
x1=-2,x2=-8

Combining 4 (X-Y) &# 178; - 9 (X-Y) &# 178; + 5 (Y-X) &# 178; - 4 (X-Y) &# 178; according to (X-Y) &# 178; the same type is obtained
A. - 4x squared + 4Y & # 178; B. - 14x & # 178; + 14y & # 178; C. - 14 (X-Y) & # 178; D. - 4 (X-Y) & # 178;

4(x-y)²-9(x-y)²+5(y-x)²-4(x-y)²
=4(x-y)²-9(x-y)²+5(x-y)²-4(x-y)²
=(4-9+5-4)(x-y)²
=-4(x-y)²

When x = √ 2013-1, find the value of (x = 1) &# 178; - 6

（x+1）²-6
=(√2013-1+1)²-6
=（√2013）²-6
=2013-6
=2007

Given that √ X-1 + √ 9-x is meaningful, find the value of the algebraic formula | X-1 | + √ (X-10) & # 178

√ X-1 + √ 9-x meaningful = > 1