Errors in Academic Systems Algebra Software by Plato
Intermediate Algebra
Click bullet to show or hide
7.1 Factoring Polynomials I
Grouping, Homework, #1
6y²z² - 2yz²x² + 3yx - zx³
= (6y²z² - 2yz²x²) + (3yx - zx³)
GCF of 1st two terms is 2yz²
GCF of 2nd two terms is x
2yz²(3y - x²) + x(3y - zx²)
Error in the software! There is a "z" in the last factor. Cannot proceed any further.
Original problem should have z^3 (z cubed) in the second term:
6y²z²-2yz³x²+3yx-zx³
Reported to Plato, 9/23/07
