User:Jockmonkey

$2x+9 \cdot\ {1 \over 2} * {2x \over 1} * {1 \over \sqrt{x^2-4}} + 2\sqrt{x^2-4}$

$2x+9 \cdot\ {2x \over 2\sqrt{x^2-4}} + 2\sqrt{x^2-4}$

${x(2x+9) \over \sqrt{x^2-4}} + 2\sqrt{x^2-4}$

$A = P (1 + r) n$

$Prove that$ $2\cos^2 \theta\ \over 1 - \sin \theta\$ $= 2 + \sin \theta\$

$Simplify$ $3sin 2 A + 4cos 2 A - 3$

$Prove that$ $1 \over \csc \theta\ - \cot \theta\$ $-$ $1 \over \csc \theta + \cot \theta$ $= 2\cot \theta\$

$2\cos^2 \theta\ \over 1 - \sin \theta\$ $= 2 + \sin \theta\$

$LHS:$ $2 - 2\sin^2 \theta\ \over 1 - \sin^2$

$2\left (1 - sin^2 \theta\ \right) \over 1 - \sin \theta\$

$2\left (1 + \sin \theta\ \right) = 2 + 2\sin \theta\$

$2 + 2\sin \theta\ = 2 + 2\sin \theta\$

$.:. L H S = R H S$

$\int_{-2}^{7} \sqrt{(x+2)}\ dx$

Failed to parse (unknown error): \int_{-3}^{-2} \{-y^2 -5y-6}\ dy