P= 125x^3-8y^3
=5^3x^3-2^3y^3
=(5x)^3-(2y)^3
=(5x-2y)(25x^2+10xy+4y^2)
P=4x(x-2y)+8y(2y-x)
=4x(x-2y)-8y(x-2y)
=(4x-8y)(x-2y)
=4(x-2y)(x-2y)
=4(x-2y)^2
(2x+1)^2-(x-1)^2=(2x+1-x+1)(2x+1+x-1)
=(x+2)3x
K NHA!
P= 125x^3-8y^3
=5^3x^3-2^3y^3
=(5x)^3-(2y)^3
=(5x-2y)(25x^2+10xy+4y^2)
P=4x(x-2y)+8y(2y-x)
=4x(x-2y)-8y(x-2y)
=(4x-8y)(x-2y)
=4(x-2y)(x-2y)
=4(x-2y)^2
(2x+1)^2-(x-1)^2=(2x+1-x+1)(2x+1+x-1)
=(x+2)3x
K NHA!
Phan tich da thuc thanh nhan tu :
1) x^4 + x^3 +x + 1
2) x^3 + 3x^2+ 3x +1 -8y^3
Cac ban ghi loi giai ro rang cho minh nha.thanks
Phan tich da thuc thanh nhan tu
P= x^4 - 64x
Cac ban ghi loi giai ro rang cho minh nha.thanks nhieu
Phan tich da thuc thanh nhan tu:
P=x^2-6xy+9y^2
Cac ban ghi loi giai ro rang từng bước cho mình nha
phan tich cac da thuc sau thanh nhan tu a)x^2+4x+3 b) 4x^2+4x-3 c) x^2-x-12 d)4x^4+4x^2y^2-8y^4
Phan tich da thuc thanh nhan tu
1) (2x+1)^2 - (x-1)^2
2) 9(x+3)^2 - 4(x-2)^2
3) 25(2x - y) ^2 - 16(x+2y)^2
4) x^4 + x^3 +x + 1
5) x^3 + 3x^2 + 3x + 1 -8y^3
Phân tích đa thức thành nhân tử:
1) P= x^2 - 6xy + 9y^2
2) x^4 - 64x
3) 125x^3 - 8y^3
4) 2x( x+1) + 3(x+1)
5) 4x(x-2y +8y( 2y -x)
Các ban giai giup minh 5bai nay nha.cam on nhieu lam
phan tich da thuc thanh nhan tu : a) 3x^2 - 22xy + 4x + 8y + 7x^2 + 1 ; b) 12x^2 + 5x - 12y^2 + 12y - 10xy - 3 ; c)x^4 + 6x^3 + 11x^2 + 6x + 1
a, x^3-x^2-4x^2+8x-4
b, 4x^2-25-(2x-5)2x+7
c, x^3+27+(x+3)(x-9)
d, 2x^2-2y^2+5x-5y
e, x^2-y^2-2y-1
phan tich da thuc thanh nhan tu
Phan tích da thuc thanh nhan tu:
1) 4x2 - y2
2) x2 - 2xy - 8y2
cac ban giai giúp minh nha