Question

please ans this as fast as u can

Answer 1

$\frac{(105) {}^{2} - (104) {}^{2} }{(6) {}^{2} - (5) {}^{2} } \\ by \: the \:formula \: a { }^{2} - b {}^{2} = (a + b)(a - b) \\ = \frac{(105 + 104)(105 - 104)}{(6 + 5)(6 - 5) } \\ = \frac{209 \times 1}{11 \times 1} = \frac{209}{11} = 19$
this is the solution