(b-4)²-(a+3)² решите

Question

(b-4)²-(a+3)²
решите

Answer 1

=(b^2 - 8b + 16) - ( a^2 + 6a + 9)= b^2 - 8b + 16- a^2 - 6a - 9= b^2 -a^2 -  8b - 6a + 7