(x2 - y2 + 6y - 9):(x - y + 3)
= [x2 - (y2 - 6y + 9)]:(x - y + 3)
= [x2 - (y - 3)2]:(x - y + 3)
= [x + (y - 3)][x - (y - 3)]:(x - y + 3)
= (x + y - 3)(x - y + 3):(x - y + 3)
= x + y - 3
Chia
( x 2-y 2+6y-9):(x-y+3)
Làm phép chia bằng cách áp dụng hằng đẳng thức:
a) \(\left(x^8-2x^4y^4+y^8\right):\left(x^2+y^2\right)\)
b) \(\left(64x^3+27\right):\left(16x^2-12x+9\right)\)
c) \(\left(x^3-9x^2+27x-27\right):\left(x^2-6x+9\right)\)
d) \(\left(x^3y^6z^9-1\right):\left(xy^2z^3-1\right)\)
1. tìm Min , Max
a, A= x^2-1+1
b,B= 3x^2-5+7
c,C= -2x^2 - x +1
d= x^2 +y^2 -2x +6y +12
e, E= -2x^2 +x
f= x^2+5y^2 - 4xy +6x -14y+15
(x3 - 7x + 3 - x2) : (x - 3)
(2y^3-5y^2+6y-15):(2y-5)
tính nhanh: a) (x^2 - 6xy + 9y^2) : ( 3 y - x)
b) (8x^3 - 1 ) : ( 4x^2 + 2x + 1)
c) ( 4x^4 - 9 ) : ( 2x^2 - 3 )
d) ( 8x^3 - 27 ) : ( 4x^2 + 6x + 9)
(x5 + 2x4 + 3x + x - 3) : (x2+1)
help me
giúp e câu này vs các acj
(x2+2x+1):(x=1)
Làm tính chia
\(1.\left(6x^3-7x^2-x+2\right):\left(2x+2\right)\)
\(2.\left(x^2-y^2+6x-9\right):\left(x+y+3\right)\)
\(3.\left(x^4-x-14\right):\left(2x-5\right)\)
