How do you simplify 3x (x -1) - 4 (x^2 - x)? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer NJ Mar 26, 2018 =>-x^2+x Explanation: =>3x(x-1)-4(x^2-x) =>3x^2-3x-4x^2+4x =>-x^2+x 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 1730 views around the world You can reuse this answer Creative Commons License