\(3\left(x-1\right)^2-3x\left(x-5\right)=1\)
\(\Rightarrow3x^2-3^2-3x^2+15x=1\)
\(\Rightarrow3x^2-9-3x^2+15x=1\)
\(\Rightarrow-9+15x=1\)
\(\Rightarrow15x=-8\)
\(\Rightarrow x=\frac{-8}{15}\)
Tim x: 3(x-1)^2 - 3x(x-5) = 1 ; x^2 - 2x + 1 Mn giup e vs ak
Tim x: x^2 - 2x + 1 = 25 ; 3(x-1)^2 - 3x(x-5)=1
Mn giup e vs <3
Tim x: x^2 - 2x + 1 = 25 ; 3(x-1)^2 - 3x(x-5)=1
Mn giup e vs <3
Tim GTNN cua:
1/ A = x^3 - 3x^2 + 3x + 5 với x >= 2
2/ B = x^3 + 6x^2 + 12x - 1 với x >= - 1
Mn giup em với a <3
Tim x, biet:
a)(x-3)^3-(x-3)(x^2+3x+9)+9(x-1)^2=15
b)(x^2-2)^2+4(x-1)^2-4(x^2-2)(x-1)=0
Giup minh voi!
Phan tich da thuc thanh nhan tu
A^3 +a^2b-a^2c-abc
A^4+a^3-a^2-a
Tim x biet
X^2+5x+6=0
2(x+3)-x^2-3x=0
X^2+4x+3=0
Giup e nhe mn e cam on nhieu ạ lop 8 . e can gấp giup nhé
1, (x+1)2-3(x+1)
2, 2x(x-2) - (x-2)2
3, 4x2-20xy+ 25y2
4, x2+3x-x-3
5, x2-xy+x-y
6, 2y(x+2)-3x-6 giai giup em voi ạ
cho P=(2+x/2-x+4x^2/x^2-4-2-x/2+x):x^2-3x/2x^2-x^3
a) tim dieu kien cua x de gia tri cua P xac dinh
b) rut gon P
mn giup minh voi
Tim GTNN cua : D = x^2 - x + 1
E = x.(x-3)
G = x^2 + 5y^2 + 2xy - 2y + 100
Mn giup e vs <3