phan tich da thuc thanh nhan tu
x^2 + 4y^2 +3x - 6y
giai dum mik vs
phan tich da thuc thanh nhan tu
x(x-4)+5x-20
\(=x\left(x-4\right)+5\left(x-4\right)=\left(x+5\right)\left(x-4\right)\)
phan tich da thuc thanh nhan tu
4x2-4y2-4y-1
\(4x^2-4y^2-4y-1\)
\(\Leftrightarrow4x^2-\left(2y+1\right)^2\)
\(\Leftrightarrow\left(2x-2y-1\right)\left(2x+2y+1\right)\)
P/s tham khảo nha
\(=4x^2-\left(4y^2+4y+1\right)\)
\(=4x^2-\left(4y^2+4y+1^2\right)\)
\(=\left(2x\right)^2-\left(2y+1\right)^2\)
\(=\left(2x-2y-1\right)\left(2x+2y+1\right)\)
phan tich da thuc thanh nhan tu 1-3x-x^3+3x^2
\(1-3x-x^3+3x^2\)\(=\left(1-x^3\right)+\left(3x^2-3x\right)\)
\(=\left(1-x\right)\left(x^2+x+1\right)+3x\left(x-1\right)\)
\(=\left(x-1\right)\left(3x-x^2-x-1\right)=\left(x-1\right)\left(2x-x^2-1\right)\)
\(x^2-x-4y^2-2y\) phan tich da thuc thanh nhan tu
\(x^2-x-4y^2-2y\)
\(=x^2-4y^2-\left(x+2y\right)\)
\(=\left(x-2y\right)\left(x+2y\right)-\left(x+2y\right)\)
\(=\left(x+2y\right)\left(x-2y-1\right)\)
phan tich da thuc thanh nhan tu x2-3x+18
phan tich da thuc thanh nhan tu
x^2-3x+3y-y^2
x2 - 3x + 3y - y2
= (x2 - y2) - (3x - 3y)
= (x - y)(x + y) - 3(x - y)
= (x - y)(x + y - 3)
= x2 - y2 - 3x+3y = (x-y)(x+y) -3(x-y)
= (x+y+3)(x-y)
nhớ chọn cho mk nha!!!!!!
phan tich da thuc thanh nhan tu
3x^3 +12x^2 +12x
tu de bai suy ra: 3x(x^3+4x+4)=3x(x+2)^2
Phan tich da thuc thanh nhan tu (x²+3x)^2+7x²+21x+10
phan tich da thuc thanh nhan tu:
3x^2+22xy+11x+37y+7y^2+10
=3x2+21xy+6x+xy+7y2+2y+5x+35y+10
=3x.(x+7y+2)+y.(x+7y+2)+5.(x+7y+2)
=(x+7y+2)(3x+y+5)