$\left(-1\right)^5\:+\:\left(-1\right)^4+\:\left(-1\right)^3\:-\:\left(-1\right)^2\:-\:\left(-1\right)\:-\:1$
$xy^'=2y+x^2$
$-3+x^2+x^2+3y^2$
$\frac{cos^2\left(x\right)-sin^2\left(x\right)}{sin\left(x\right)}+sin\left(x\right)=\frac{cot\left(x\right)}{sec\left(x\right)}$
$a^2+14a+7$
$\left(1+x\right)cm$
$\int_1^{\sqrt{3}}\sqrt{4-x^2}dx$
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