3[9−(6−3)]−103[9-\left(6-3\right)]-103[9−(6−3)]−10
5x9sinx7secx\frac{5x^9sinx}{7\sqrt{secx}}7secx5x9sinx
6a+10ab−9ab−15b6a+10\sqrt{ab}-9\sqrt{ab}-15b6a+10ab−9ab−15b
2cos(2x)2−4=3tan(2x)\frac{2}{\cos\left(2x\right)^2}-4=3\tan\left(2x\right)cos(2x)22−4=3tan(2x)
f(x)=8−2xf\left(x\right)=8-2xf(x)=8−2x
(x2−4x+7)(x−2)\left(x^2-4x+7\right)\left(x-2\right)(x2−4x+7)(x−2)
8 =−25c 8\:=-\frac{2}{5}c\:8=−52c
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