# Elementary Algebra Practice Exam Solutions #1-4

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Taught by YourMathGal
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Lesson Description:

These are solutions to a Practice Test made for my online Elementary Algebra class.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
• Where can I find Algebra practice exam problem questions and answers?
• How do you simplify 2(4x - 5) - (7x + 4)?
• How do you simplify 5[2 - 3(4 - x) - 7x]?
• How can you use the distributive property to simplify Algebraic expressions?
• How do you distribute if you have brackets and parentheses?
• How do you know what to do first if there are parentheses inside of brackets in the same problem?
• What does 5^-2 equal?
• How do you simplify (-5)^2?
• How are (-5)^2 and -5^2 different?
• Why does -5^2 = -25?
• What does (-5)^0 equal?
• Why is -5^0 equal to -1?
• What does 2^-3 equal?
• How do you simplify (-2)^3?
• What does -2^3 equal?
• How do you raise a negative number to a negative exponent?
• How do you simplify (-5)^-2?
• How do you simplify (-2)^-3?
• How do you evaluate y^2 - x^2 when x = -5 and y = -2?
• How do you evaluate 3xy + 9x when x = -5 and y = -2?
• How do you evaluate (3 - x)^2 when x = -5?
• How do you solve an Algebraic formula for a certain variable?
• How do you solve Ax + By = C for y?
• How do you convert an equation in standard form into slope-intercept form?
• How can you solve the formula A = 1/2(x + y) for y?
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This lesson goes through some example problems from a practice Algebra exam. Each step in the problems is shown clearly. The topics covered in this video are the distributive property, exponents, evaluating expressions given values for variables, and solving formulas for a variable.