5000=100X+X^2,求X
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5000=100X+X^2,求X5000=100X+X^2,求X5000=100X+X^2,求X原式可化为X²+100X-5000=0∴X²+2*50x+-5000+50²
5000=100X+X^2,求X
5000=100X+X^2,求X
5000=100X+X^2,求X
原式可化为X² + 100X -5000 = 0
∴X² +2*50x+-5000+50²=50²(等式两边同时乘加上一个数,等式仍然成立)
∴(x+50)²=2500+5000【a²+b²+2ab=(a+b)²】
∴x+50=±50根号3
∴x=±50根号3-50
很高兴为您解答.
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5000=100X+X^2,
x^2+100x+2500=7500
(x+50)^2=7500
x= ±√7500-50
x1=50√3-50
x1=-50√3-50
5000=100X+X^2,求X
X^2 + 100X -5000 = 0
x = -100±根号( 10000 + 20000) / 2
= (-100±100根号3) / 2
= -50±50根号3
施主,我看你骨骼清奇,
器宇轩昂,且有慧根,
乃是万中无一的武林奇才.
潜心修习,将来必成大器,<...
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5000=100X+X^2,求X
X^2 + 100X -5000 = 0
x = -100±根号( 10000 + 20000) / 2
= (-100±100根号3) / 2
= -50±50根号3
施主,我看你骨骼清奇,
器宇轩昂,且有慧根,
乃是万中无一的武林奇才.
潜心修习,将来必成大器,
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