Vũ Thị Thủy Tiên
Giới thiệu về bản thân
hloo claas
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2023-05-16 20:48:09
a, P ( x ) - Q ( x ) = ( x3 - 3x2 + x + 1 ) - ( 2x3 - x2 + 3x - 4 )
= x3 - 3x2 + x + 1 - 2x3 + x2 - 3x + 4
= ( x3 - 2x3 ) + ( -3x2 + x2 ) + ( x - 3x ) + ( 1 - 4 )
= -x3 - 2x2 - 2x - 3
2023-05-16 20:39:42
a, ( x . 2 ) = -4 . ( -11 )
2x = 44
x = 44 : 2
x = 22
Vậy x = 22
2022-03-30 15:23:13
2022-03-30 15:22:32
2022-03-22 17:40:01