⑤a²-1/4b² ⑥(x-y)²/4 — (x+y)²/4 ⑦1/3x³-3x

⑤a²-1/4b² ⑥(x-y)²/4 — (x+y)²/4 ⑦1/3x³-3x

⑤a²-1/4b² =1/4(4a²-b²)=1/4(2a+b)(2a-b)⑥(x-y)²/4 — (x+y)²/4=1/4[(x-y)²-(x+y)²]=1/4(x²-2xy+y²-x²-2xy-y²)=-xy⑦1/3x³-3x =1/3x (x²-...

First decompose the factor, and then evaluate: 3A & # 178; (X-Y) &# 179; - 4B & # 178; (Y-X) &# 178;, where x = 4, y = 3, a = B

(X-Y) \35\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\; × 4-3a & # 178; × 3-4A & # 178;) = 1 × (12

If the image of quadratic function y = (A-1) x ^ A & # - 1 has the lowest point, then a=_______

If the image of quadratic function y = (A-1) x ^ A & # - 1 has the lowest point, then a=_ √3______
a-1＞0；a＞1;
a²-1=2；
a²=3；
a=±√3；
∵a＞1
∴a=√3
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