Question

CÁC BẠN GIÚP MÌNH NHÉ MÌNH CẢM ƠN

Answer 1

Bn cắt ra cho mn dễ làm nha

Answer 2

Bài 11:

a: \(4x^2-1=\left(2x-1\right)\left(2x+1\right)\)

b: \(25x^2-\dfrac{9}{100}=\left(5x-\dfrac{3}{10}\right)\left(5x+\dfrac{3}{10}\right)\)

c: \(9x^2-\dfrac{1}{4}=\left(3x-\dfrac{1}{2}\right)\left(3x+\dfrac{1}{2}\right)\)

d: \(\left(x-y\right)^2-4=\left(x-y-2\right)\left(x-y+2\right)\)

Answer 3

ảnh nét hơn nè

Answer 4

Bài 1: 

a: \(4x^2-12x+9=\left(2x-3\right)^2\)

b: \(4x^2+4x+1=\left(2x+1\right)^2\)

c: \(36x^2+12x+1=\left(6x+1\right)^2\)

d: \(9x^2-24xy+16y^2=\left(3x-4y\right)^2\)

e: \(\dfrac{x^2}{4}+2xy+4y^2=\left(\dfrac{1}{2}x+2y\right)\%2\)

f: \(-x^2+10x-25=-\left(x-5\right)^2\)

Answer 5

Bài 2:

a: \(-16x^4y^6-24x^5y^5-9x^6y^4\)

\(=-x^4y^4\left(16y^2+24xy+9x^2\right)\)

\(=-x^4y^4\left(4y+3x\right)^2\)

b: \(25x^2-20xy+4y^2=\left(5x-2y\right)^2\)

c: \(25x^4-10x^2y+y^2=\left(5x^2-y\right)^2\)

d: \(\left(3x-1\right)^2-16\)

\(=\left(3x-1-4\right)\left(3x-1+4\right)\)

\(=\left(3x-5\right)\left(3x+3\right)\)

\(=3\left(x+1\right)\left(3x-5\right)\)

e: \(\left(5x-4\right)^2-49x^2\)

\(=\left(5x-4-7x\right)\left(5x-4+7x\right)\)

\(=\left(-2x-4\right)\left(12x-4\right)\)

\(=-8\left(x+2\right)\left(3x-1\right)\)

f: \(\left(2x+5\right)^2-\left(x+9\right)^2\)

\(=\left(2x+5-x-9\right)\left(2x+5+x+9\right)\)

\(=\left(x-4\right)\left(3x+14\right)\)