phan tich thanh nhan tu
x3+x2-4x-4
Phan tich da thuc thanh nhan tu : x2 - 4x -y2+4
\(x^2-4x+4-y^2\)
\(=\left(x-2\right)^2-y^2\)
\(=\left(x-2-y\right)\left(x-2+y\right)\)
\(x^2-4x-y^2+4=\left(x-2\right)^2-y^2=\left(x-y-2\right)\left(x+y-2\right)\)
Phan tich da thuc thanh nhan tu : x2 - 4x -y2+4
\(x^2-4x+4-y^2\)
\(=\left(x-2\right)^2-y^2\)
\(=\left(x-2-y\right)\left(x-2+y\right)\)
\(=\left(x-2\right)^2-y^2=\left(x-y-2\right)\left(x+y-2\right)\)
phan tich 4x^4-12x^2+1 thanh cac nhan tu
(4a4-12a2+1)=(4a4-8a2+1)-4a2=(2a2-1)2-4a2=(2a2-2a-1)(2a2+2a-1)
phan tich da thuc thanh nhan tu: 4x^4-32x^2+1
4x^4 - 32x^2 +1 = 4x^4 + 4x^2 +1 - 36x^2 = (2x^2 + 1)^2 - 36x^2 = (2x^2 - 6x + 1)(2x^2 + 6x + 1)
4 x4 - 32 x2 + 1
= ( 2 x2 )2 - 2 . 2x2. 8 + 64 - 63
= ( 2 x2 - 8 )2 - 63
= ( 2x2 - 8 + √63 ) ( 2x2 - 8 - √63 )
Xong
phan tich da thuc thanh nhan tu : 4x^4+4x^3+5x^2 +2x +1
4x^4+4x^3+5^2+2x+1
phan tich da thuc thanh nhan tu
4x^4+4x^3+5^2+2x+1 = (4x^4+4x^3+x^2) + (4x^2+2x) + 1 = x^2(2x+1)^2 + 2x(2x+1) + 1 = [x(2x+1)]^2 +2x(2x+1) + 1 = (2x^2+x+1)^2
nếu là 5^2 thì như tui
còn 5x^2 thì như Kami
Phan tich da thuc thanh nhan tu x^2(1-x^2)-4-4x^2
X^4+4x^3+5x^2+2x+1
Phan tich da thuc thanh nhan tu
phan tich da thuc thanh nhan tu
x^2(1-x^2)-4-4x^2