Answer:
8x² -4x -3
Step-by-step explanation:
The x² terms are "like" terms, so can be combined. They have the same variable to the same power.
7x² -4x +x² -3
= (7+1)x² -4x -3 . . . . use the distributive property to rewrite 7x² +x²
= 8x² -4x -3
