$14+x=18$
$\left(8x^4+4x^2\:y^2+y^4\right)\left(8x^4-4x^2\:y^2+y^4\right)$
$3\left(-5\right)\left(-8\right)$
$\left(61+23\right)\left(-15+17\right)$
$6t-3t^2=0$
$\left(\left(x^2-9x\right)+9\right)\left(\left(x^2-9x\right)-9\right)$
$\sin\left(2x\right)=\sin\left(x\right)^2\cos\left(x\right)^2$
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