因式分解:X四次方+16,注意,是+16

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因式分解:X四次方+16,注意,是+16
因式分解:X四次方+16,注意,是+16

因式分解:X四次方+16,注意,是+16
解原式=x^4+8x^2+16-8x^2
=(x^2+4)^2-(2倍根号2*x)^2
=(x^2+2倍根号2*x+4)(x^2-2倍根号2*x+40

x^4+16
=(x²)²+4²
=(x²)²+8x²+4²-8x²
=(x²+4)²-8x²
=(x²+4)²-(2√2x)²
=(x²+4+2√2x)(x²+4-2√2x)
=(x...

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x^4+16
=(x²)²+4²
=(x²)²+8x²+4²-8x²
=(x²+4)²-8x²
=(x²+4)²-(2√2x)²
=(x²+4+2√2x)(x²+4-2√2x)
=(x²+2√2x+4)(x²-2√2x+4)

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X四次方+16
=(x⁴+8x²+16)-8x²
=(x²+4)²-(2√2x)²
=(x²+2√2x+4)(x²-2√2x+4)
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X^4+16
=x^4+8x²+16-8x²
=(x²+4)²-8x²
=(x²+2√2x+4)(x²-2√2x+4)