because it tells you that you need to do distribute that number to all the other numbers. if you didnt use it your would come out with the wrong answer... not all the time but in most cases your answer will be incorrect if you do not use the distributive property
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Yes normally because the LHS expression equals the RHS expression
To solve Box 5 on Algecaching, you first need to gather the clues provided in the previous boxes and any hints that may be available. Look for patterns or codes that are typical in the game, such as algebraic expressions or equations. Use logical reasoning to manipulate the information, solve any equations, and derive the final answer needed for Box 5. If you're stuck, revisiting previous boxes or seeking community hints can also be beneficial.
how much fencing will be needed to fence a property 6.5 meters long and 3 meters wide?
Because it's needed in everyday life - whether adding up a shopping bill or solving complex equations in your job.
Partial differential equations are great in calculus for making multi-variable equations simpler to solve. Some problems do not have known derivatives or at least in certain levels in your studies, you don't possess the tools needed to find the derivative. So, using partial differential equations, you can break the problem up, and find the partial derivatives and integrals.