Question

25 upon 16 a square minus a b + 4 upon 25 b squar​

Answer 1

Answer:

$\\ \frac{25}{16} {a}^{2} - ab + \frac{4}{25} {b}^{2} \\ = \frac{25}{16} \times a \times a - a \times b + \frac{4}{25} b \: \times b \\ = \frac{25}{16} + \frac{4}{25} \times {a}^{2} - ab \times {b}^{2} \\ lcm \: of \: 16 \: and \: 25 \: is \: 400 \\ = \frac{25 \times 25}{16 \times 25} = > \frac{625}{400} \\ = \frac{4 \times 16}{25 \times 16} = > \frac{64}{400} \\ = \frac{625 + 64}{400} = > \frac{689}{400} \\ = \frac{689}{400} \times {a}^{2} \times {b}^{2} - ab$

HOPE IT HELPS

PLEASE MARK IT AS BRAINLIEST ANSWER