Question

8(a+1)^2+2(a+1)(b+2)-15(b+2)^2​

Answer 1

Step-by-step explanation:

8(a+1)² + 2(a+1)(b+2) - 15(b+2)²

8(a²+2a+1) + 2(ab+2a+b+2) - 15(b²+4b+4)

8a² + 16a + 8 + 2ab + 4a + 2b + 4 - 15b² - 60b - 60

8a² - 15b² + 20a - 58b + 2ab - 48