21 Solve the equation of the second degree in \( x \) : Deduce the values of \( y \) that verify \( : y^{2}-3|y|+2=0 \) and the values of \( z \) that verify: \( (z-2)^{2}-3|z-2|+2=0 \).

\( \equiv \) (i) Listen A bowl contains blueberries and strawberries. There are a total of 12 berries in the bowl. The ratio of blueberries to strawberries is 1 to 2 . How many of each berry are in the bowl? \( \square \) blueberries strawberries

a \( \quad 2^{3} \cdot 2^{-4} \)

5. Question 5. Solve \( 5 x-3=2 x+6 \)

Add \( 5 \mathrm{a}-3 \mathrm{~b} \) and \( -5 \mathrm{~b}+3 \mathrm{a} \) the result is ...... \[ \begin{array}{l}8 \mathrm{a}-8 \mathrm{~b} \\ 8 \mathrm{a}+8 \mathrm{~b} \\ 8 \mathrm{~b}-8 \mathrm{a} \\ 2 \mathrm{a}-2 \mathrm{~b}\end{array} \]

3. Question 3. Solve \( x-5=3 x+2 \)