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Question Number 189639    Answers: 1   Comments: 1

(((20)),(( 0)) ) (((10)),(( 1)) ) + (((20)),(( 1)) ) (((10)),(( 2)) ) +...+ ((( 20)),(( 9)) ) ((( 10)),(( 10)) ) =?

$$ \\ $$$$\:\:\begin{pmatrix}{\mathrm{20}}\\{\:\mathrm{0}}\end{pmatrix}\:\begin{pmatrix}{\mathrm{10}}\\{\:\mathrm{1}}\end{pmatrix}\:+\:\begin{pmatrix}{\mathrm{20}}\\{\:\mathrm{1}}\end{pmatrix}\:\begin{pmatrix}{\mathrm{10}}\\{\:\:\mathrm{2}}\end{pmatrix}\:+...+\:\begin{pmatrix}{\:\:\:\mathrm{20}}\\{\:\:\mathrm{9}}\end{pmatrix}\:\begin{pmatrix}{\:\:\mathrm{10}}\\{\:\mathrm{10}}\end{pmatrix}\:=? \\ $$$$ \\ $$

Question Number 189664    Answers: 1   Comments: 0

Question Number 189630    Answers: 2   Comments: 0

16^x +20^x =25^x x (∈ R) =?

$$\mathrm{16}^{{x}} +\mathrm{20}^{{x}} =\mathrm{25}^{{x}} \\ $$$${x}\:\left(\in\:\mathbb{R}\right)\:=? \\ $$

Question Number 189625    Answers: 2   Comments: 1

Question Number 189624    Answers: 1   Comments: 0

Question Number 189616    Answers: 1   Comments: 0

Question Number 189615    Answers: 1   Comments: 0

Question Number 189614    Answers: 1   Comments: 0

Question Number 189613    Answers: 1   Comments: 0

find nth term of (1,4,16,74,404,2578) ?

$${find}\:{nth}\:{term}\:{of}\:\left(\mathrm{1},\mathrm{4},\mathrm{16},\mathrm{74},\mathrm{404},\mathrm{2578}\right)\:? \\ $$

Question Number 189610    Answers: 1   Comments: 0

solve for x if log x=(x^2 /(25))

$${solve}\:{for}\:{x}\:{if}\:\:\: \\ $$$$\mathrm{log}\:{x}=\frac{{x}^{\mathrm{2}} }{\mathrm{25}} \\ $$

Question Number 189608    Answers: 2   Comments: 1

Question Number 189605    Answers: 0   Comments: 4

Question Number 189603    Answers: 2   Comments: 0

Question Number 189601    Answers: 0   Comments: 0

Question Number 189593    Answers: 0   Comments: 0

Question Number 189592    Answers: 0   Comments: 0

Question Number 189598    Answers: 0   Comments: 0

Question Number 189576    Answers: 1   Comments: 0

2^x + 2^x −4 + x = −(1/2) x = ???

$$ \\ $$$$\:\:\:\:\:\mathrm{2}^{\boldsymbol{{x}}} \:+\:\mathrm{2}^{\boldsymbol{{x}}} −\mathrm{4}\:+\:\boldsymbol{{x}}\:=\:−\frac{\mathrm{1}}{\mathrm{2}}\:\:\:\:\:\:\: \\ $$$$\:\:\:\:\:\:\boldsymbol{{x}}\:=\:??? \\ $$$$ \\ $$

Question Number 189567    Answers: 2   Comments: 1

Question Number 189564    Answers: 1   Comments: 0

Question Number 189563    Answers: 2   Comments: 0

Question Number 189559    Answers: 1   Comments: 0

(−1)^(1/3) =? ((−1))^(1/3) =?

$$\:\left(−\mathrm{1}\right)^{\frac{\mathrm{1}}{\mathrm{3}}} =? \\ $$$$\sqrt[{\mathrm{3}}]{−\mathrm{1}}=? \\ $$

Question Number 189558    Answers: 2   Comments: 0

Question Number 189557    Answers: 2   Comments: 0

Question Number 189555    Answers: 0   Comments: 0

Question Number 189554    Answers: 0   Comments: 0

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