
Home > A2C > Chapter 11 > Lesson 11.2.4 > Problem 11-88
11-88.
Multiply the entire equation by x and x − 7.
3x − 21 + 5x = −2x2 + 14x
Set the equation into standard format.
2x2 − 6x − 21 = 0
Use the quadratic formula.
Multiply by the entire equation by 12.
6x + 9 − 2x + 14 = 2x − 3
Solve for x.
2x = −26
x = −13