1) 9x³y² – 15x²y³
2) 2x² – 10x
3) 12xy³ + 6x²y – 3x³y⁴
4) 2x + 2z
5) x(a – 1) + y( a-1)
6) y( 1-x ) + 2 ( x-1)
ae giải giúp mình nha ????????❤️❤️
1) 9x³y² – 15x²y³
2) 2x² – 10x
3) 12xy³ + 6x²y – 3x³y⁴
4) 2x + 2z
5) x(a – 1) + y( a-1)
6) y( 1-x ) + 2 ( x-1)
ae giải giúp mình nha ????????❤️❤️
Đáp án:
1)=3x^2*y^2(3x-5y)
2)=2x(x-5)
3)=3xy(4y^2+2x-x^2*y^3)
4)=2(x+z)
5)=(a-1)(x+y)
6)=(x-1)(2-y)
Đáp án:
Giải thích các bước giải:
$\begin{array}{l}
1){\rm{ }}9xy{\rm{ }} – {\rm{ }}15xy{\rm{ = 3}}x{y^2}{\rm{(3x – 5y) }}\\
2){\rm{ }}2x{\rm{ }} – {\rm{ }}10x{\rm{ = 2x(x – 5)}}\\
3){\rm{ }}12xy{\rm{ }} + {\rm{ }}6xy{\rm{ }} – {\rm{ }}3xy{\rm{ = 3xy(4}}{{\rm{y}}^2} + 2x – {x^2}{y^3})\\
4){\rm{ }}2x{\rm{ }} + {\rm{ }}2z{\rm{ = 2(x + z)}}\\
5){\rm{ }}x\left( {a{\rm{ }} – {\rm{ }}1} \right){\rm{ }} + {\rm{ }}y\left( {{\rm{ }}a – 1} \right){\rm{ = (a – 1)(x + y) }}\\
6){\rm{ }}y\left( {{\rm{ }}1 – x{\rm{ }}} \right){\rm{ }} + {\rm{ }}2{\rm{ }}\left( {{\rm{ }}x – 1} \right) = (x – 1)( – y + 2) = (x – 1)(2 – y)\\
\end{array}$