Question

x²-1=
16-9²=
x²-y4=
16a²b²-36b²
​

Answer 1

Explicación paso a paso:

${x}^{2} - 1 = (x + 1)(x - 1) \\ {4}^{2} - {9}^{2} = (4 + 9)(4 - 9) = 13 \times - 5 = - 65 \\ {x}^{2} - {y}^{4} = (x - {y}^{2} )(x + {y}^{2} ) \\ 16 {a}^{2} { b}^{2} - 36 {b}^{2} = 4 {b}^{2} (2a + 3)(2a - 3)$