Flashcard 7 - Math Reasoning Flashcard Set for the GED Test
Back
Change all the signs of the terms in the polynomial being subtracted. Proceed to usual addition.
Another method is to distribute the subtraction sign through the polynomial to eliminate the parenthesis.
Explanation:
\[(6x^3 - x^2y +15) - (3x^3 - 4x^2y + 3)\]
\[(6x^3 - x^2y + 15) + (-3x^3 +4x^2y - 3)\]
\[3x^3 + 3x^2y + 12 = x^3 + x^2y + 4\]
All Flashcard Sets for the GED Test are now available as downloadable PDFs