How do you simplify #2x^2# when x=4? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer Faisal Mar 29, 2018 #32# Explanation: Put #x=4# in #2x^2# =#2(4)^2# =#2*16# =#32# Hope this helps! Answer link Related questions What is PEMDAS? How do you use PEMDAS? How do you use order of operations to simplify #3(7-2)-8#? What are common mistakes students make with PEMDAS? How do you evaluate the expression #5[8+(3-1)]-2#? How do you simplify the expression #4(30-(3+1)^2)#? How do you evaluate the expression #x^4+x# if x=2? Is it okay to add first before subtracting in #4-6+3#? How do you simplify #(-3)^2+12*5#? How do you simplify #(4-2)^3-4*8+21div3#? See all questions in PEMDAS Impact of this question 2119 views around the world You can reuse this answer Creative Commons License