1) 3x^2 +7x-6
=3x2-2x+9x-6
=x.(3x-2)+3.(3x-2)
=(3x-2)(x+3)
2)6x^213x+6
đề khùng
3)8x^2+5x+3
8x2-3x+8x+3
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phan tich thanh nhan tu(bang ki thuat tach hang tu)
1)-8x^2+5x+3
2)-10x^2-17x+6
Phan tich thanh nhan tu ( bang ki thuat bo sung hang dang thuc )
5x^2 + 14x -3
5x^2 -18x-8
6x^2+7x-3
x^2-xy-2y^2
phan tich thanh nhan tu bang cach tach hang tu
a) x3-x2-x-2
b) x3-6x2-x+30
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
phan tich thanh nhan tu bang pp dung hang dang thuc 1+8x^6y^3
Phan tich thanh nhan tu ( bang ki thuat bo sung hang dang thuc):
x^2-4xy-x+3y^2+3y
x^2+4xy+2x+3y^2+6y
6x^2+xy-7x-2y^2+7y-5
6a^2-ab-2b^2+a+4b
Phan tich thanh nhan tu ( bang ki thuat no sung hang dang thuc)
6x^2-xy-y^2
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6x^2+2xy-4y^2
2x^2+2xy-4y^2
Phan tich thanh nhan tu ( bang ki thuat no sung hang dang thuc)
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2x^2+5xy+y^2
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2x^2+2xy-4y^2
phan tich da thuc thanh nhan tu bang phuong phap tach
a, x2 - 2x - 3