Question

(a+b-c) (a-b+c) please give me the Answer Of this Questions

Answer 1

Answer:

(a-b-c)2

Step-by-step explanation:

the a-b-c is holesquare

Answer 2

Answer:a*a - b*b +2b*c - c*c

Step-by-step explanation:

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

We should multiply each term of one term with whole second expression

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

a*a - a*b + a*c + a*b - b*b + b*c - a*c + b*c - c*c

a*a - a*b + a*b - b*b + a*c - a*c + b*c + b*c - c*c

Since, -x +x = 0

a*a + 0 - b*b + 0 + 2b*c - c*c

a*a - b*b + 2b*c - c*c