怎样用因式分解法解出50T-3T^2=175 ,

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怎样用因式分解法解出50T-3T^2=175,怎样用因式分解法解出50T-3T^2=175,怎样用因式分解法解出50T-3T^2=175,-3t^2+50t=175-3t^2+50t-175=0由十字

怎样用因式分解法解出50T-3T^2=175 ,
怎样用因式分解法解出50T-3T^2=175 ,

怎样用因式分解法解出50T-3T^2=175 ,
-3t^2+50t=175
-3t^2+50t-175=0
由十字交叉法:
-3t 35
t -5
(-3t+35)(t-5)=0
所以t=35/3或5

50T-3T^2=175
3T^2-50T+175=0
(3T-35)(T-5)=0

T=35/3或T=5

50T-3T^2=175
3T^2-50T+175=0
(3T-35)(T-5)=0
3T-35=0
T-5=0
T=35/3
T=5