1) phan tich da thuc thanh nhan tu
a)ax^2+a^2y-07x-7y
b)ax^2+ay-bx^2-by
c)x^2+5x+6
phân tích cac da thuc sau thanh nhan tu:
a) x^3-2x^2 +2x -13
b) x^2y+xy +x +1
c) ax+by+ay+bx
d) x^2 -(a+b)x +ab
e) x^2y +xy^2 -x-y
f) ax^2 +ay-bx^2-by
bn post nhiều nên mình ghi đáp án thôi nhé phần nào sai đề mình cho qua
b)\(\left(x+1\right)\left(xy+1\right)\)
c)\(\left(a+b\right)\left(x+y\right)\)
d)\(\left(x-a\right)\left(x-b\right)\)
e)\(\left(x+y\right)\left(xy-1\right)\)
f)\(\left(a-b\right)\left(x^2+y\right)\)
Phan tich da thuc thanh nhan tu :
a) x^2 - x - y^2 - y
b) x^2 - 2 xy + y^2 - z^2
c) 5x - 5y + ax - ay
d) a^3 - a^2 x - ay + xy
e) 4x^2 - y^2 +4x + 1
a) x2-x-y2-y=(x2-y2)-(x+y)=(x+y)(x-y)-(x+y)=(x+y)(x-y-1)
b)x2-2xy+y2-z2=(x-y)2-z2=(x-y-z)(x-y+z)
c)5x-5y+ax-ay=5(x-y)+a(x-y)=(x-y)(5+a)
d)a3-a2x-ay+xy=a2(a-x)-y(a-x)=(a-x)(a2-y)
e)4x2-y2+4x+1=[(2x)2+2.2x.1+12]-y2=(2x+1)2-y2=(2x+1-y)(2x+1+y)
Chúc bạn học tốt!
phan tich da thuc thanh nhan tu:
a) (a-b)2012x+2012y-ax-ay
b) (a-b) 144y2-x2+2x-1
a)(a-b)2012x+2012y-ax-ay
=(a-b)[x(2012-a)+y(2012-a0]
=(a-b)(2012-a)(x+y)
b)(a-b)144y2-x2+2x-1
=(a-b)[144y2-(x2-2x+1)]
=(a-b)[(12y)2-(x-1)2]
=(a-b)(12y+x-1)(12y-x+1)
Phan tich da thuc thanh nhan tu:
x^3 - x + 3x^2y + 3xy^2 + y^3 - y
x^2 + 5x - 6
x^3 - x + 3x^2y + 3xy^2 + y^3 - y
=x3+y3+3x2y+3xy2-x-y
=(x+y)(x2-xy+y2)+3xy(x+y)-(x+y)
=(x+y)(x2-xy+y2+3xy-1)
=(x+y)(x2+2xy+y2-1)
=(x+y)[(x+y)2-1]
=(x+y)(x+y-1)(x+y+1)
x^2 + 5x - 6
=x2-x+6x-6
=x.(x-1)+6.(x-1)
=(x-1)(x+6)
phan tich da thuc thanh nhan tu
ax2 + 1x +a
\(ax^2+ax+a=a\left(x^2+x+1\right)\)
phan tich da thuc thanh nhan tu
a) 7xy^2+5x^2y
b) x^2+2xy+y^2-11x-11y
a) 7xy^2+5x^2y
= xy(7y+5x)
b) x^2+2xy+y^2-11x-11y
= (x^2+2xy+y^2)-(11x+11y)
=(x+y)^2-11(x+y)
=(x+y)(x+y-11)
a) 7xy2 + 5x2y
= xy ( 7y + 5x )
b) x2 + 2xy + y2 - 11x - 11y
= ( x2 + 2xy + y2 ) - ( 11x + 11y )
= ( x + y )2 - 11 ( x + y )
= ( x + y )( x + y - 11 )
phan tich da thuc thanh nhan tu:
3x^2-7x-10 5x^3-5x^2y-10x^2+10xy
3x2 - 7x - 10
= 3x2 + 3x - 10x - 10
= (3x2 + 3x) - (10x + 10)
= 3x(x + 1) - 10(x + 1)
= (3x - 10)(x + 1)
5x3 - 5x2y - 10x2 + 10xy
= 5x(x2 - xy - 2x + 2y)
= 5x[(x2 - xy) - (2x - 2y)]
= 5x[x(x - y) - 2(x - y)]
= 5x(x - 2)(x - y)
chúc bn hok tốt
nhớ ủng hộ tik cho mik nhé! ko lần sau mik ko giúp đâu
có j ko hiểu thì bn cứ bình luận ở dưới nhé
Trình bày cái đề cho đàng hoàng giúp.
phan tich cac da thuc sau thanh nhan tu theo mau:
2x^3-x
5x^2(x-1)-15x(x-1)
3x^2y^2+12x^2y-15x-y^2
3x(x-2y)+6y(2y-x)
phan tich cac da thuc sau thanh nhan tu theo mau:
a)\(2x^3-x\)
\(=x\left(2x^2-1\right)\)
\(=x\left(\left(\sqrt{2}x\right)^2-1^2\right)\)\
\(=x\left(\sqrt{2}x-1\right)\left(\sqrt{2}x+1\right)\)
b)\(5x^2\left(x-1\right)-15x\left(x-1\right)\)
\(=\left(5x^2-15x\right)\left(x-1\right)\)
\(=5x\left(x-3\right)\left(x-1\right)\)
d)\(3x\left(x-2y\right)+6y\left(2y-x\right)\)
\(=3x\left(x-2y\right)-6y\left(x-2y\right)\)
\(=\left(3x-6y\right)\left(x-2y\right)\)
\(=3\left(x-2y\right)\left(x-2y\right)\)
\(=3\left(x-2y\right)^2\)
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