Question

4х²-9=
прошу срочно нужно​

Answer 1

$4x {}^{2} - 9 \\ 2 {}^{2} x {}^{2} - 3 {}^{2} \\ (2x) {}^{2} - 3 {}^{2} \\ a {}^{2} - b {}^{2} = (a - b)(a + b) \\ (2x - 3)(2x + 3)$