Answer:
The first rectangle is 3x² - 6x + 13 more square feet then the second rectangle
Step-by-step explanation:
A rule for subtracting polynomials
- Keep the first term the same
- Change the subtraction sign to addition
- Change the sign for every term
Steps
- Keep the polynomial 7x²- 4x + 12 the same
- Change the subtraction sign to addition
- Change the sign for every term 4x² + 2x - 1 becomes -4x² - 2x + 13
At the end of the expression is (7x²- 4x + 12) + -4x² - 2x + 1
At this point you combine like terms like you do with adding polynomials so ( 7x² + (-4x²) is 3x², (-4x) + (-2x) is (-6x), and 12 + 1 is 13) so the final answer would be 3x²-6x+13
