\(\Leftrightarrow3x^2+24x-x^2-2x^2-2x=2\)
\(\Leftrightarrow x=\dfrac{1}{11}\)
\(\Leftrightarrow3x^2+24x-x^2-2x^2-2x=2\)
\(\Leftrightarrow x=\dfrac{1}{11}\)
Tìm GTNN:
a. x^2 +6x + 17
b.x^2-8x+20
c.(x-3)(x+6)-3(x+1)
d.(x-4)(x+4)-5(x-3)
e.(x+5)^2+(x-1)^2
f.(x+8)(x-8)-4(x+5)
g.3x^2-x+5
h. 5x^2-11/2x+1
i. 2x^2 +7y^2 biết 3x-y=1
k. 3x^2 +4y^2 biết 2x+5y=3
l. x^2 -xy +y^2- 2x-2y
tìm x
a) x(2x-7) -2x(x+1) =7
b) 3x(x+8) -x^2 -2x(x+1) =2
1. x^2-y^2-2x+2y 2. x^3-x+3x^2y+3xy^2+y^3-y. 3. 4x^4y^4+1. 4. x^2-2x-4y^2-4y. 5.x^3-x^2-x+1. 6.x^2y-x^3-9y+9x. 7.x^3-2x^2+x-xy^2. 8.x^2-2x-4y^2-4y.
1/ (x+1)^2 - 16y^2
2/ 2x^2 - 8
3/ 3x^2 - 5x - 3y^2 + 5y
4/ 3x^2 -7x +6
5/ x^2 + y^2 - 4x^2y^2 + 2xy
6/ x^2 + 1 - y^2 + 2x
2)x^2-2xy+y^2-2x+2y
3)3x^2-2x-5
4)16-x^2+4xy-4x^2
5)x^2-2x+1-y^2
6)x^2+8x+15
7)(x^2+6x+8)(x^2+14x+48)-9
8)(x^2-8x+15)(x^2-16x+60)-24x^2
9)x^5+x^4+1
10)x^4-x^3-10x^2+2x+4
Tìm x
a)4(x+3)(3x-2)-3(x+1)(4x-1)=-27
b)(x+1)(3x²-x+1)+x²(4-3x)=5/2
c)2(x-2)(x+2)+4(x-2)(x+1)+(x+2)(8+5x)=0
d)(2x+1)(5x-1)=20x²-16x-1
😭😭😭😭😭
\(\left(x^2+2x+8\right)^2+3x\left(x^2+2x+8\right)+2x^2\)
j) (2x – 1)(3x + 1) – (4 – 3x)(3 – 2x) = 3
k) (2x + 1)(x + 3) – (x – 5)(7 + 2x) = 8
m) 2(3x – 1)(2x + 5) – 6(2x – 1)(x + 2) = - 6
tìm X nhé
Phân tích đa thức thành nhân tử
\(2x^4+3x^3-9x^2-3x+2 \)
\(x^4-3x^3-6x^2+3x+1\)
\(x^4-8x^2-x+12\)
\(x^4-x^3-10x^2+2x+4\)
\((x+2)^4+(x+8)^4-272\)
\((3-x)^4+(4x-x)^4-(7-2x)^4\)
\(2x^4-x^3y+3x^2y^2-xy^3+2x^4\)