Justin Bieber worked out the following problem. Hailey Baldwin told him she found a mistake. Where was Justin's error (x^2-3x+4)-(x^3+7x-2) =x^2-3x+4-x^3+7x-2 =-x^3+x^2+4x+2 He didn't distribute the negative to everything in the park hesis after He didn't combine the like terms correctly He was supposed to multiply the trinomials Justin made no mistakes

Justin made a mistake in distributing the negative sign to everything in the parentheses after the subtraction. Let's go through the correct steps:The original expression is: When you remove the parentheses, you need to distribute the negative sign across each term in the second set of parentheses: Now, combine like terms:- The term: - The term: - The terms: - The constant terms: So, the correct simplified expression is: Therefore, Justin's error was that he didn't distribute the negative sign correctly to all terms in the second set of parentheses.