Lucas and erick are factoring the polynomial
12x3 – 6x2 + 8x – 4. lucas groups the polynomial (12x3 + 8x) + (–6x2 – 4) to factor. erick groups the polynomial (12x3 – 6x2) + (8x – 4) to factor. who correctly grouped the terms to factor? explain.

The polynomial is:
12 x³ - 6 x² + 8 x - 4
Lucas:
( 12 x³ + 8 x ) + ( - 6 x² - 4 ) = 4 x ( 3 x² + 2 ) - 2 ( 3 x² + 2 ) = 
= ( 3 x² + 2 ) ( 4 x - 2 ) = 2 ( 3 x² + 2 ) ( 2 x - 1 )
Erick:
( 12 x³ - 6 x² ) + ( 8 x - 4 ) = 6 x² ( 2 x - 1 ) + 4 ( 2 x - 1 ) = 
= ( 2 x - 1 ) ( 6 x² + 4 ) = 2 ( 3 x² + 2 ) ( 2 x - 1 )

Both students are correct. Each grouping leads to the same result. 

Od. 130 degrees because if you add them together you get the 130