Question

7. Subtract: 7x²- 4x + 5 from
5x²- 7x - 3xy +9​

Answer 1

Answer:

$- 2 {x}^{2} - 3x - 3xy + 4$

Step-by-step explanation:

$5 {x}^{2} - 7x - 3xy + 9 \\ 7 {x}^{2} - 4x + 0xy + 5 \\ \\ after \: changing \: the \: signs \: \\ - 2 {x}^{2} - 3x - 3xy + 4$