$\lim_{x\to0}\frac{7^{sinx}-1}{4x}$
$4 x ^ { 2 } - 8 x ^ { 2 } - 6 x ^ { 2 } + 2 x ^ { 2 } - 6 x + 10$
$x-4<2x+16$
$\sin^2\left(a\right)+\sin^2\left(b\right)=1$
$\int\:\left(3x^2-2\right)sen5xdx$
$5+3x>4-x$
$5-\left(x-1\right)$
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