How do you evaluate #x^2+3x-5# for x=2? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer MathFact-orials.blogspot.com Dec 30, 2016 #2^2+3(2)-5=5# Explanation: We take the equation: #x^2+3x-5# and substitute 2 for #x#: #2^2+3(2)-5# #4+6-5# #5# Answer link Related questions How do you write the variable expression for: a quotient of 2 and the sum of a number and 3 ? What are variables? What are variable expressions? How do you write variable expressions? How do you evaluate variable expressions? How do you simplify the expression #3x-x+4#? How do you write a quotient of a number and 6 as an expression? How do you evaluate the expression #2x+1# for #x=1#? How do you write a product of a number and 2 as an expression? How do you write 5 less than 2 times a number as a variable expression? See all questions in Variable Expressions Impact of this question 2331 views around the world You can reuse this answer Creative Commons License