Question

& Find the factorisation of a? - 2ab + b2-c?.​

Answer 1

Answer:

${a}^{2} - 2ab + {b}^{2} - {c}^{2} \\ {a}^{2} - ab - ab + {b}^{2} - {c}^{2} \\ a(a - b) - b(a - b) - {c}^{2} \\ (a - b) {}^{2} - {c}^{2} \\ (a - b - c)(a - b + c)$