Question

Expand the brackets and simplify

(5-n)(3+n)​

Answer 1

Answer:

$(5 - n)(3 + n) \\ = 15 + 5n - 3n - {n}^{2} \\ = (15 + 2n - {n}^{2} ) \times - 1 \\ = - 15 - 2n + {n}^{2} \\ \\ {n}^{2} - 2n - 15 \\ {n}^{2} - 5n + 3n - 15 \\ n(n - 5) + 3(n - 5) \\ (n - 5)(n + 3)$