Question

a square minus 2 a square b square - 1 + b square​

Answer 1

${a}^{2} - 2 {a}^{2} {b}^{2} - 1 + {b}^{2} \\ \\ {a}^{2} - 2 {a}^{2} {b}^{2} + {b}^{2} - 1 \\ {a}^{2} - {a}^{2} {b}^{2} - {a}^{2} {b}^{2} + {b}^{2} + 1 \\ {a}^{2} (1 - {b}^{2} ) - {b}^{2} ( {a}^{2} + 1) + 1$