Question

Simplify and factorise in bracket a + b + C whole square minus in bracket a minus b minus C whole square + 4 b square - 4 c square

Answer 1

Answer:

(a+b+c)2

= (a+b)2 + c2 + 2c(a+b) (a+b+c)2 =a2+b2+2ab+c2+2ac+2bc =a2+b2+c2+2ab+2ac+2bc

(a - b - c)²

= (a - b - c)(a - b - c)

= a(a - b - c) - b(a - b - c) - c(a - b - c)

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

c²

= a² + b² + c² - 2ab - 2ac + 2bc

Answer 2

Answer:

plz refer to the above attachment for the answer