Toán Lớp 8: Tìm x
a. 3 ( x – 1 )² + ( 2x + 3)² – 7 ( x – 2 )( x + 2)=2x – 1
b. (X – 1)³ – ( x – 1)³ -6(x – 1)²=-19
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Toán Lớp 8: Tìm x
a. 3 ( x – 1 )² + ( 2x + 3)² – 7 ( x – 2 )( x + 2)=2x – 1
b. (X – 1)³ – ( x – 1)³ -6(x – 1)²=-19
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