SCIDES PC10 Unit 5 Quiz 1-1 (Lesson 1) Leave a Comment / By ttang7259@gmail.com / June 21, 2026 Welcome to your SCIDES PC10 Unit 5 Quiz 1-1 (Lesson 1) 1. Expand then simplify \(5x(3x-3+x)\). \(25x^2-15x\) \(20x^2-15x\) \(15x^2-10x\) \(15x^2+5x^2-15x\) None Show Hint Solution: \(5x(3x-3+x)=15x^2-15x+5x^2=20x^2-15x\). Correct answer: B. 2. What is the degree of the polynomial \(x^2y^3-2xy^4+3x^2y^2+10\)? Show Hint Solution: The term degrees are \(2+3=5\), \(1+4=5\), \(2+2=4\), and \(0\). The highest degree is \(5\). Correct answer: \(5\). 3. Simplify \((-3x^2y)(2xy^3)\). \(6x^3y^4\) \(-9x^4y^4\) \(-6x^2y^3\) \(-6x^3y^4\) None Show Hint Solution: \((-3x^2y)(2xy^3)=-6x^{2+1}y^{1+3}=-6x^3y^4\). Correct answer: D. 4. Evaluate the polynomial \(-3x^5-2y^3+6x^2\) when \(x=-3\) and \(y=-4\). Show Hint Solution: \(-3(-3)^5-2(-4)^3+6(-3)^2=729+128+54=911\). Correct answer: \(911\). 1 out of 1 Previous Start Quiz Next Time's up
