Question

perform the indicated operation.

1.
$2x + 3x - x5$


2.
$7y + 5 {y}^{2} - 3y$


3.
$6a \: (2 {a}^{2} b {c}^{3} )$


4.
$(x + y)(x - y)$


5.
$\frac{10 {x}^{2} yz}{2x}$
questions:
1. how did you know that the given expressions are simplified?

2. what concepts have you applied?
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Answer 1

Answer:

1) To simplify any algebraic expression, the following are the basic rules and steps: Remove any grouping symbol such as brackets and parentheses by multiplying factors. Use the exponent rule to remove grouping if the terms are containing exponents. Combine the like terms by addition or subtraction.