Practice problem
Simplify this expression: −(x−a)(x+a)+x2-(x-a)(x+a)+x^2−(x−a)(x+a)+x2
2x22x^22x2
−x2-x^2−x2
x2−a2x^2-a^2x2−a2
a2a^2a2
Type a concept, like “slope” or “photosynthesis”.
