Phan tich da thuc thanh nhan tu:
2a+6b+15c
4m^2n-8m^2n-12n
a^4-b^4
16b^4-9c^2
5a(x+y)+x+y
a) x^2 + y^2 -25 +2xy
b) a ^2- 2a -4b^2-4b
c)a^2-b^2-5a-5b
phan tich da thuc thanh nhan tu
\(a,=\left(x+y\right)^2-5^2=\left(x+y+5\right)\left(x+y-5\right)\)
\(b,=\left(a-1\right)^2-1-\left(2b+1\right)^2-1=\)
\(c,=\left(a-b\right)\left(a+b\right)-5\left(a+b\right)=\left(a+b\right)\left(a-b-5\right)\)
a,( x2 + 2xy + y2 ) -25
=( x + y )2 - 52
=( x + y + 5) ( x + y - 5)
b,
phan tich da thuc thanh nhan tu
4.x^4.y^4+1
phan tich da thuc thanh nhan tu (x^2+y^2+z^2)^2- 2(x^4+y^4+z^4)
phan tich da thuc thanh nhan tu
a, x^4.y^4+4
phan tich da thuc thanh nhan tu
a) 2a(x+y)+y+x
b) 2(x-y)^2-x+y
c) x^2-xy-3x+3y
d) ax^2+6x^2-6x-ax+a+b
2) phan tich da thuc thanh nhan ( nhieu phuong phap)
a) 5a^2+20a+20 c) 25-x^2+2xy-y^2
b) 5a^2-10ab+5b^2 d) m^2+2mn+n^2-p^2
phan tich da thuc sau thanh nhan tu:
a)(x-y+4)^2-(2x+3y-1)^2
Đặt \(A=\left(x-y+4\right)^2-\left(3x+3y-1\right)^2\)
Ta có:
\(\left(x-y+4\right)^2=x^2-xy+4x-yx+y^2-4y+4x-4y+16\)
\(=x^2+y^2-2xy+8x-8y+16\)
\(\left(3x+3y-1\right)^2=9x^2+9xy-3x+9xy+9y^2-3y-3x-3y+1\)
\(=9x^2+9y^2-6x-6y+18xy+1\)
Mình làm đến đây bạn trừ 2 kết quả cho nhau rồi sẽ ra
phan tich da thuc thanh nhan tu
a, x^4.y^4+64
phan tich da thuc thanh nhan tu C=x^4+2x^3.y-2X^2.y^2+11.x.y^3-6y^4
phan tich da thuc thanh nhan tu
x4 +y4 +64
Sửa đề: x^4+64
x^4+64
=x^4+16x^2+64-16x^2
=(x^2+8)^2-(4x)^2
=(x^2-4x+8)(x^2+4x+8)