Solving Multi-Step Linear Equations and Compound Inequalities

Question

+5

706

2

+961

What is the solution to the equation 2(x3−5x2+11x)−45=2x3−5(2x2+4x)+165?

shaniab29544 Dec 4, 2014

+128408

+10

Best Answer

2(x3−5x2+11x)−45=2x3−5(2x2+4x)+165 simplify

2x³ - 10x² + 22x - 45 = 2x³ - 10x² - 20x + 165 subtract/add 2x³, 10x² to both sides

22x - 45 = -20x + 165 add 45 and 20 x to both sides

42x = 210 divide both sides by 42

x = 5

CPhill Dec 4, 2014

CPhill · Answer 1 · 2014-12-04T03:35:27

2(x3−5x2+11x)−45=2x3−5(2x2+4x)+165 simplify

2x³ - 10x² + 22x - 45 = 2x³ - 10x² - 20x + 165 subtract/add 2x³, 10x² to both sides

22x - 45 = -20x + 165 add 45 and 20 x to both sides

42x = 210 divide both sides by 42

x = 5

shaniab29544 · Answer 2 · 2014-12-04T03:41:32

Thank u