(x²-5)²+8(x²-5)+16 因式分解(x²-5)²+8(x²-5)+16 因式分解
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(x²-5)²+8(x²-5)+16 因式分解(x²-5)²+8(x²-5)+16 因式分解
(x²-5)²+8(x²-5)+16 因式分解
(x²-5)²+8(x²-5)+16 因式分解
(x²-5)²+8(x²-5)+16 因式分解(x²-5)²+8(x²-5)+16 因式分解
原式=(x²-5+4)²
=(x²-1)²
=(x+1)²(x-1)²
原式=(x2-5)2+2×4(x2-5)+42,
=(x2-5+4)2,
=(x2-1)2,
=(x+1)2(x-1)2.
=[(X²-5)+4]²=(X²-1)²