options: Solve real-life and mathematical problems using numerical and algebraic expressions and equations.

Represent and solve equations and inequalities graphically.

Understand properties of multiplication and the relationship between multiplication and division.

Write and interpret numerical expressions.

Gain familiarity with factors and multiples.

Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.

Solve systems of equations.

Understand and apply properties of operations and the relationship between addition and subtraction.

Work with addition and subtraction equations.

Interpret the structure of expressions.

Analyze and solve linear equations and pairs of simultaneous linear equations.

Represent and solve problems involving addition and subtraction.

Use the four operations with whole numbers to solve problems.

Generate and analyze patterns.

Understand the connections between proportional relationships, lines, and linear equations.

Rewrite rational expressions.

Multiply and divide within 100.

Analyze patterns and relationships.

Write expressions in equivalent forms to solve problems.

Create equations that describe numbers or relationships

Reason about and solve one-variable equations and inequalities.

Represent and solve problems involving multiplication and division.

Understand the relationship between zeros and factors of polynomials.

Apply and extend previous understandings of arithmetic to algebraic expressions.

Represent and analyze quantitative relationships between dependent and independent variables.

Solve equations and inequalities in one variable.

Use properties of operations to generate equivalent expressions.

Understand solving equations as a process of reasoning and explain the reasoning.

Perform arithmetic operations on polynomials.

Add and subtract within 20.

Work with equal groups of objects to gain foundations for multiplication.

Use polynomial identities to solve problems.

Solve problems involving the four operations, and identify and explain patterns in arithmetic.

Work with radicals and integer exponents.
problem_activity: Task
Consider the algebraic expressions below:
$$ (n + 2)^2 - 4 \qquad \text{and} \qquad n^2 + 4n. $$
Use the figures below to illustrate why the expressions are equivalent:
[IMG]
Find some ways to algebraically verify the same result.


correct_option_index: 9