Adding/Subtracting Algebraic Expressions (Junior Cert Mathematics): Quizzes

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Adding/Subtracting Algebraic Expressions
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What are variables in algebra?

Symbols representing numbers

Which of these is an algebraic expression?

3x+23x + 2

What are like terms?

Same variable, same power

Which pair are like terms?

3x3x and 2x2x

What is the first step when adding algebraic expressions?

Identify like terms

What do you combine when adding like terms?

The coefficients

What is (3x+5y)+(4x+2y)(3x + 5y) + (4x + 2y)?

7x+7y7x + 7y

Simplify (5x+3y)+(2x−4y)(5x + 3y) + (2x - 4y).

7x−y7x - y

Subtracting a negative is the same as what?

Adding

Simplify 4m+6n−2m+3n4m + 6n - 2m + 3n.

2m+9n2m + 9n

What are constant terms?

Numbers without variables

What is (3x2+2x−1)+(4x2−3x+5)(3x^2 + 2x - 1) + (4x^2 - 3x + 5)?

7x2−x+47x^2 - x + 4

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