Question

-4x^2+12xy-9y^2+25 phân tích đa thức thành nhân tử giúp với mn ơi gấp gấp

 

Answer 1

\(-4x^2+12xy-9y^2+25=25-\left(2x-3y\right)^2=\left(5-2x+3y\right)\left(5+2x-3y\right)\)

Answer 2

\(-4x^2+12xy-9y^2+25\)

\(=25-\left(4x^2-12xy+9y^2\right)\)

\(=25-\left(2x-3\right)^2\)

\(=\left(5+2x-3\right)\left(5-2x+3\right)\)

Answer 3

\(-4x^2+12xy-9y^2+25\)
\(=\left(-4x^2+12xy-9y^2\right)+25\)
\(=-\left(4x^2-12xy+9y^2\right)+25\)
\(=-\left(2x-3y\right)^2+25\)
Chúc học tốt tick mk nha

 

Answer 4

-4x² + 12xy - 9y² + 25

<=> -(-4x² + 12xy - 9y² + 25)

<=> (2x)² - 12xy - (3y)² - 5²

<=> (2x - 3y)² - 5²

<=> (2x - 3y - 5)(2x - 3y + 5)

Answer 5

\(-4x^2+12xy-9y^2+25\)

\(=-\left(4x^2-12xy+9y^2-25\right)\)

\(=-\left(2x-3y-5\right)\left(2x-3y+5\right)\)