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Home > A2C > Chapter 9 > Lesson 9.3.1 > Problem 9-122

9-122.

Now Carlos needs to solve 2x3 + 3x2 − 8x + 3 = 0, but his calculator will still only create a standard graph. He sees that the graph of y = 2x3 + 3x2 − 8x + 3 crosses the x-axis at x = 1. Find all three solutions to the equation. Homework Help ✎

Divide 2x3 + 3x2 − 8x + 3 = 0 by x − 1.

Now factor the equation.

2x2 + 3x2 − 8x + 3 = 0
(x − 1)(2x2 + 5x − 3) = 0

Continue to factor and find the three solutions.