Question

(a-b-c)² explain the trinomial formula

Answer 1

(a-b-c)²

=> [a +(-b) +(-c)] ²

=> a² +(-b)² +(-c)² +2[-ab+bc-ac]

=> a² + b²+c² -2ab + 2bc - 2ac

Answer 2

Heya ✋

Let see your answer !!!!

$(a - b - c) ^{2} \\ = (a) ^{2} + ( - b) ^{2} + ( - c) ^{2} \\ + 2 \times a \times ( - b) + 2 \times ( - b) \times \\ ( - c) + 2 \times ( - c) \times a \\ = a ^{2} + b ^{2} + c ^{2} - 2ab + 2bc \\ - 2ca$






Thanks :)))))