x + 2 / 44 = 24 / 32
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\(\frac{a+2}{44}=\frac{24}{32}\)
<=> ( a + 2 ).32 = 24.44
=> a + 2 = \(\frac{24.44}{32}=\frac{1056}{32}=33\)
=> a + 2 = 33 => a = 31
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a) \(2x^4+3x^3-16x-24=0\)
\(\left(2x^4+3x^3\right)-\left(16x+24\right)=0\)
\(x^3.\left(2x+3\right)-8\left(2x+3\right)=0\)
\(\left(x^3-8\right)\left(2x+3\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x^3-8=0\\2x+3=0\end{cases}}\Rightarrow\orbr{\begin{cases}x^3=8\\2x=-3\end{cases}}\Rightarrow\orbr{\begin{cases}x=2\\x=\frac{-3}{2}\end{cases}}\)
vậy \(\orbr{\begin{cases}x=2\\x=-\frac{3}{2}\end{cases}}\)
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44-40+36-32+28-24+20-16+12-8+4-0=4+4+4+4+4+4=4x6=24
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44-40+36-32+28-24+20-16+12-8+4-0
= ( 36 + 4 - 40 ) + ( 28 + 12 - 32 - 8 ) + ( 44 - 24 - 16 ) + 20 - 0
= 0 + 0 + 4 + 20 - 0
= 24
x + 2 / 44 = 24 / 32
x=31/44
HT
x + 2/44 = 24/32
x = 24/32 - 2/44
x = 31/44