$3\cdot\left(1.45\right)^2+3\cdot\left(1.45\right)-2$

$20n^{11}+7n^7-6n^3$

$\left(ab\right)-\left(a+b\right)$

$\frac{\sec\left(a\right)}{\sin\left(a\right)}-\tan\left(a\right)=\cot a$

$\int\left(\frac{6x^2-2x-4}{x^3-4x}\right)dx$

$8x^2-7x+15$

$-5-\left(-7\right)8-1014+\left(-6\right)$