Question

(a+b+c) (a+b-c) I will give brainliest

Answer 1

Step-by-step explanation:

(a + b + c)(a + b = c)

= a(a + bc) + b(a + bc) + c(a + bc)

= (a x a) + (a × b) - (a × c) + (b × a) + (b × b) − (b × c)

+ (cx a) + (cx b) - (cx c)

= a² + ab - ac + ba + b² - bc + ca + cb = c² - = a² + b²c² + ab + ab - bc + bc - ac + ac

= a² + ab - ac + ab + b² - bc + ac + bc - c²

= a² + b²c² + 2ab

Answer 2

a^2 + b^2 -c^2x+3ab -bc