1. Write 0,00000356 in scientific notation. 3.2. Simplify. 3.2.1. 22.23.8 / 4.5. 3.3. Solve the equation.

Here are the solutions to the problems.

3.1 Write 0.00000356 in scientific notation.

Step 1: Move the decimal point to the right until there is only one non-zero digit to its left. $0.00000356 \rightarrow 3.56$

Step 2: Count the number of places the decimal point moved. It moved 6 places to the right. Since the decimal point moved to the right, the exponent of 10 will be negative.

Step 3: Write the number in scientific notation. $3.56 \times 10^{-6}$ The final answer is $\boxed{3.56 \times 10^{-6}}$.

3.2.1 Simplify: $\frac{2^2 \cdot 2^3 \cdot 8}{4^5}$

Step 1: Express all numbers as powers of the same base, which is 2. $8 = 2^3$ $4 = 2^2$

Step 2: Substitute these into the expression. $\frac{2^2 \cdot 2^3 \cdot 2^3}{(2^2)^5}$

Step 3: Apply the product rule for exponents ($a^m \cdot a^n = a^{m+n}$) in the numerator. $2^{2+3+3} = 2^8$

Step 4: Apply the power rule for exponents ($(a^m)^n = a^{mn}$) in the denominator. $(2^2)^5 = 2^{2 \times 5} = 2^{10}$

Step 5: Rewrite the expression with the simplified numerator and denominator. $\frac{2^8}{2^{10}}$

Step 6: Apply the quotient rule for exponents ($\frac{a^m}{a^n} = a^{m-n}$). $2^{8-10} = 2^{-2}$

Step 7: Express the result with a positive exponent. $2^{-2} = \frac{1}{2^2} = \frac{1}{4}$ The final answer is \boxed{\frac{1{4}}}.

3.3 Solve the equation: The equation to be solved is not visible in the provided image. Please provide the equation.