Ôn tập Số Nguyên cực hay có lời giải

Tính:

a, $\left(x-7\right).\left(x+8\right)=0$

b, $\left(x-19\right).\left(x+21\right)=0$

Tính:

$$\begin{gathered} a, -13.\left(x-645\right).\left(x+613\right)=0 \\ b, 651.\left(x-12\right).\left(x+946\right)=0 \end{gathered}$$

Tính:

$$\begin{gathered} a, \left.-x-35\right|.\left.x+623\right|=0 \\ b, \left.-x-56\right|.\left.x+965\right|=0 \end{gathered}$$

Tính:

$$\begin{gathered} a, -\left(-56\right).\left.-x-61\right|.\left.x+132\right|=0 \\ b, -\left.-96\right|.\left.-x-856\right|.\left.x+965\right|=0 \end{gathered}$$

Tính:

$$\begin{gathered} a, -\left(-23\right).\left.-x-265\right|.\left.x+948\right|=0 \\ b, -\left.-98\right|.\left.-x-641\right|.\left.x+431\right|=0 \end{gathered}$$

Tính:

$$\begin{gathered} a, -551.\left.-x-642\right|.\left(x+4563\right).\left.x-6431\right|=0 \\ b, -\left.-465\right|.\left.x-4132\right|.\left(-x+4523\right).\left.-x-6212\right|=0 \end{gathered}$$

Tính:

$$\begin{gathered} a, -64.\left.-x-6532\right|.\left(x+8965\right).\left.x-8520\right|=00 \\ b, -\left.-321\right|.\left.x-7984\right|.\left(-x+465\right).\left.-x-645\right|=0 \end{gathered}$$