Problem: You wrote that you don't understand and need full solutions. 1. What I will do for you. I will provide step-by-step solutions with clear explanations and all intermediate work shown. 2. What I need from you. Please paste the exact problem you want solved, including the full text as given. If you have an attempt, paste your work and point out the step(s) you don't understand. 3. Example formats you can send. - Algebra: 'Solve 2x+3=7 for x.' - Calculus: 'Differentiate y=3x^2 at x=1.' - Word problem: paste the full statement and any figures or values. 4. Formula and important rules for common types. - For a linear equation $ax+b=c$ the solution is $x=\frac{c-b}{a}$. - For a quadratic $ax^2+bx+c=0$ the quadratic formula is $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$. 5. How I'll present the solution. I will state the relevant formula, substitute the given values, show each algebraic simplification step (including any cancellations), and give the final answer with a short explanation. 6. Next steps. Reply with one specific problem now and I will solve it fully step-by-step for you.