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Hết!Chúc bạn ngủ ngon :)

Phân tích đa thức thành nhân tử

a) \(x^2+3ab\left(2-3ab\right)-10xy-1+25y^2\)

b)\(a^5+a^4+a^3+a^2+a+1\)

c)\(x^3-1+5x^2-5+3x-3\)

a) \(\left\{16;32;48;64;80;96\right\}\)

b)\(15\)

1.\(x-43=\left(35-x\right)-48\)

\(\Rightarrow x-43=35-x-48\)

\(\Rightarrow2x=35+43-48\)

\(\Rightarrow2x=30\)

\(\Rightarrow x=15\)

2.\(305-x+14=48+\left(x-23\right)\)

\(\Rightarrow305-x+14=48+x-23\)

\(\Rightarrow305+14=48+x+x-23\)

\(\Rightarrow2x+25=319\)

\(\Rightarrow2x=294\)

\(\Rightarrow x=147\)

3.\(-\left(x-6+85\right)=\left(x+51\right)-54\)

\(\Rightarrow-x+6-85=x+51-54\)

\(\Rightarrow6-85=x+x+51-54\)

\(\Rightarrow2x-3=-79\)

\(\Rightarrow2x=-76\)

\(\Rightarrow x=-38\)

4.\(-\left(35-x\right)-\left(37-x\right)=33-x\)

\(\Rightarrow-35+x-37+x=33-x\)

\(\Rightarrow2x-72=33-x\)

\(\Rightarrow3x=105\)

\(\Rightarrow x=35\)

5.\(13-\left|x\right|=\left|-4\right|\)

\(\Rightarrow13-\left|x\right|=4\)

\(\Leftrightarrow\left[{}\begin{matrix}13-x=4\\13+x=4\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=9\\x=-9\end{matrix}\right.\)

Nhiều quá bạn ơi

Fill in each blank with the correct word from the box (dry,kites,ride,vast)

1.Several people were flying kites on the field

2.Russia is a vast country with a lot of natural resources.

3.My brother is learning to ride a horse at the moment

4.Farmers often leave the rice in the sun to dry

Chúc bạn học tốt!