( x -5 ) . ( 2x+3 )-2x ( x-3 ) +x+7
= 2x^2 +3x -10x -15 - 2x^2 +6x +x+7
= ( 2x^2 -2x^2 ) + ( 3x -10x +6x +x ) - (15 -7 )
= -8
( x -5 ) . ( 2x+3 )-2x ( x-3 ) +x+7
= 2x^2 +3x -10x -15 - 2x^2 +6x +x+7
= ( 2x^2 -2x^2 ) + ( 3x -10x +6x +x ) - (15 -7 )
= -8
Bài 1 Tìm x
A) (15-2x)(4x+1)-(13-4x)(2x-3)-(x-1)(x+2)+x^2=52
nhanh lên mk dag can gap
(2x+3)(x-5)=4x2+6x
cac ban giai ho minh minh dang can gap
BAI 1 TINH
x ^ 2 . x - 2x^3
6 x^2 y . 3 xy - 2y ^2 .x +y
4x^2 + 5x -1 . 2x^3 - 3x
- 8 x^3y + 2 y^4 . 3xy^3 - 2 x^4 + 7y ^4
CAC BAN OI GIUP MINH NHE MINH DANG CAN GAP
cho 2 bieu thuc A=x+x^2/2-x va B=2x/x+1+3/x-2-2x^2+1/x^2-x-2 a, tinh gia tri cua A khi /2x-3/=1 b,tim dieu kien xac dinh va rut gon bieu thuc B c,tim so nguyen x de P=A.B dat gia tri lon nhat
mk dang can gap
Tính GTBT: cho x+y=5
a, A=3x2-2x+3y2-2y+6xy-100
b,B=x3+y3-2x2-2y2+3xy.(x+y)-4xy+3.(x+y)+10
cac ban giup minh đi minh dang can rat gap.
tim m biet
a) (x^2-x+1)x-(x+1)x^2+m= -2x^2+x+5
b) -x^2(x^2+x+1+2)= -x^4-x^3-x^2+m
giup vs nhanh mk dag can gap
Rut gon:
A=(x-2)^2-(2x+1)^2
B=(x-2y)^2-(x-2y) .(2y+x)
C=(x+1)^3-(x-2)^3
D=(x-1)^2-2(x-1)(x+1)+(x+1)^2
E=(x+2y)^2+2(x+2y)(x-2y)+(2y-x)
G=(2x+1)^3-(2x-1)
Giai het ho minh nha! Minh dang can gap
Bài 1: Tìm x biết
a,(x+1)(x+3)-x(x+2)=7
b,2x(3x+5)-x(6x-1)=33
c,(3x2-x+1)(x-1)+x2(4-3x)=5/2
Giúp minh voi minh can gap !!!
ai giup minh vs can gap
pt da thuc thanh nhan tu
a](x^2+y^2+z^2)*(x+y+z)^2+(xy+yz+xz)
b]2x^3-x^2+5x+3
c]x^3-7x^2-3