LR17 wrote

Simplify: (5i+1)(3i−2)−/-2/-2-4i^5+i^3

Please help with this problem, thank you. These, /, are square roots. So square root-2 square root-2

(5i + 1)(3i - 2) - √(-2) √(-2) - 4i^5 + i³

= (15i² - 7i - 2) - (2i)(2i) - 4i^5 + i³ ← foil method and simplified square roots

= 15i² - 7i - 2 - 4i² - 4i^5 + i³ ← removed parentheses and multiplied

=

**-4i^5 + i³ + 11i² - 7i - 2 ** ← combined like terms

- Proof