Question

using appropriate identities factorise the​

Answer 1

${a}^{2} - {b}^{2} = (a + b)(a - b)$

Answer 2

Answer:

$(x + y)(x - y) = {x}^{2} - {y}^{2}$

${(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy$

${(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy$

$(x + a)(x + b) = {x}^{2} + (a + b)x + ab$