5x2−20x+255x^2-20x+255x2−20x+25
k(k+7)(k+5)2\frac{k\left(k+7\right)}{\left(k+5\right)^2}(k+5)2k(k+7)
(4+5x)(−6+5x)\left(4+5x\right)\left(-6+5x\right)(4+5x)(−6+5x)
4x4−2x2−64x^4-2x^2-64x4−2x2−6
f(x)=−10x+6f\left(x\right)=-10x+6f(x)=−10x+6
10a2+10−2010a^2+10-2010a2+10−20
ddxex+2\frac{d}{dx}e^{x+2}dxdex+2
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