t²+2t=0

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3t²+12t-2=0

3t²+12t-2=03t²+12t-2=0 3t²+12t-2=06.a=1,b=-2,c=70△=b²-4ac=-276<0∴此方程无实数根8.a

13-20t+4t*t*t-20t*t*t*t=0,求t?

13-20t+4t*t*t-20t*t*t*t=0,求t?13-20t+4t*t*t-20t*t*t*t=0,求t?13-20t+4t*t*t-20t*t*t*t=0,求t?精确解集:{{t->1/2

0=10t+3t-200,

0=10t+3t-200,0=10t+3t-200,0=10t+3t-200,10或-20/3

-2t的平方-6t=0-2t*t-6t=0

-2t的平方-6t=0-2t*t-6t=0-2t的平方-6t=0-2t*t-6t=0-2t的平方-6t=0-2t*t-6t=0-2t(t+3)=0求得t=0或t=-3=>t(t+3)=0=>t=0或-

设f(1/t)=5/t+2t∧2,求f(t∧2+1)

设f(1/t)=5/t+2t∧2,求f(t∧2+1)设f(1/t)=5/t+2t∧2,求f(t∧2+1)设f(1/t)=5/t+2t∧2,求f(t∧2+1) 

0=-2t²+5t-2 求t

0=-2t²+5t-2求t0=-2t²+5t-2求t0=-2t²+5t-2求t2t²-5t+2=0(t-2)(2t-1)=0t1=2,t2=1/2

3t^2+3t-1-t^3=0,

3t^2+3t-1-t^3=0,3t^2+3t-1-t^3=0,3t^2+3t-1-t^3=0,3t(t+1)-(t+1)(t²-t+1)=0-(t+1)(t²-t+1-3t)=0

t(t-2)-3t=0

t(t-2)-3t=0t(t-2)-3t=0t(t-2)-3t=0t(t-2-3)=0t(t-5)=0t1=0t2=5如果我的回答能够解决你的问题,如果有疑问继续追问,衷心感谢你的支持

解方程t(t-2)-3t =0

解方程t(t-2)-3t=0解方程t(t-2)-3t=0解方程t(t-2)-3t=0t(t-2)-3t=0t²-2t-3t=0t²-5t=0t(t-5)=0t=0或t=5t

5t平方-2t+3=0求t

5t平方-2t+3=0求t5t平方-2t+3=0求t5t平方-2t+3=0求t∵△=4-60=-56没有实数解无解b^2-4ac小于0,无解5t平方-2t+3=0求t△=4-60=-56此题无解是5×

一元二次方程 还有一道 3t²+12t-2=0

一元二次方程还有一道3t²+12t-2=0一元二次方程还有一道3t²+12t-2=0 一元二次方程还有一道3t²+12t-2=0(7)解△=2^2-4×70=-

t∧2+8t-7=0解

t∧2+8t-7=0解t∧2+8t-7=0解t∧2+8t-7=0解V23-4t²+8t+16=23(t+4)²=23t1=√23-4t2=-√23-4t²+8t-7=0t

t平方-3t-18=0

t平方-3t-18=0t平方-3t-18=0t平方-3t-18=0t平方-3t-18=0(t-6)(t+3)=0t-6=0,t+3=0所以t1=6,t2=-3解析·因式分解(t-6)(t+3)=0所以

x>(t^2-2)/(t-2) 0

x>(t^2-2)/(t-2)0x>(t^2-2)/(t-2)0x>(t^2-2)/(t-2)0

t^2-2t+4=0

t^2-2t+4=0t^2-2t+4=0t^2-2t+4=0△=2^2-4*4=-12所以方程无解t^2-2t+4=0t^2-2t+1+3=0(t-1)^2=-3∵(t-1)^2是非负数∴无解

2t²+t-1=0

2t²+t-1=02t²+t-1=02t²+t-1=02t²+t-1=0(2t-1)(t+1)=0t=1/2或t=-1

t²-2t-20=0

t²-2t-20=0t²-2t-20=0t²-2t-20=0干什么?解方程吗?解1,公式法:t²-2t-20=0对照一元二次方程的一般式,可知:a=1、b=-2

t²+2t+1=0

t²+2t+1=0t²+2t+1=0t²+2t+1=0用开方法t²+2t+1=0(t+1)^2=0t+1=0t=-1

t^3-2t+3>0怎麼解

t^3-2t+3>0怎麼解t^3-2t+3>0怎麼解t^3-2t+3>0怎麼解令f(t)=t^3-2t+3,则令f'(t)=3t^2-2=0,则t=+/-跟号(2/3)令f“(t)=6t=0,

(t-3)(t-3)+4t(t-3)=0

(t-3)(t-3)+4t(t-3)=0(t-3)(t-3)+4t(t-3)=0(t-3)(t-3)+4t(t-3)=0这个网页到是我那2013年8月份时候用的网页,可是我不只想要回那时候的网页,还要