Divide a Number Problems

[Expand]$\scriptstyle\begin{cases}\scriptstyle a+b=10\\\scriptstyle a^2=4\sdot\left(a\sdot b\right)\end{cases}$

no such category found: #divide 10 into two parts

[Expand]$\scriptstyle\begin{cases}\scriptstyle a+b=10\\\scriptstyle a^2=\left(1+\frac{1}{2}\right)\sdot\left(a\sdot b\right)\end{cases}$

no such category found: #divide 10 into two parts

[Expand]$\scriptstyle\begin{cases}\scriptstyle a+b=10\\\scriptstyle 10^2=16\sdot a^2\end{cases}$

no such category found: #divide 10 into two parts

no such category found: #divide 10 into two parts
no such category found: #divide 10 into two parts
no such category found: #divide 10 into two parts
no such category found: #divide 10 into two parts
no such category found: #divide 10 into two parts
no such category found: #divide 10 into two parts

[Expand]$\scriptstyle\begin{cases}\scriptstyle a+b=10\\\scriptstyle\left(a-b\right)^2\sdot\left(7+\frac{1}{9}\right)=\left(a\sdot b\right)^2\end{cases}$

no such category found: #divide 10 into two parts

[Expand]$\scriptstyle\begin{cases}\scriptstyle a+b=10\\\scriptstyle\left[\left(a\sdot b\right)+a^2\right]\sdot a=\left[a\sdot\left(\frac{1}{2}\sdot a\right)\right]^2+36\end{cases}$

no such category found: #divide 10 into two parts