**Question 1:**
Simplify the expression ${x}^{2}+\left({x}^{2}+3\right)+x\left(2-0.5x\right)$

**Question 2:**
Simplify: ${\left(-4{a}^{5}{b}^{3}\right)}^{2}\left(-\frac{1}{2}ab\right)$

**Question 3:**
Find $24\%$
of $\left(2\frac{1}{7}+\frac{3}{14}\right):\left(4\frac{5}{7}\right)$

**Question 4:**
The difference in the squares of two numbers is 25, the sum of these numbers is also 25. Find these numbers.

**Question 5:**
Simplify: ${\left(1+{c}^{2}\right)}^{{}^{2}}-2{c}^{2}$

Please note, you have solved only half of the test. For the complete test get a Must Have account.

Get started