Question

30 POINTS. Please simplify this with all steps0" id="TexFormula1" title="( \frac{5i^3t^4}{7})-2 " alt="( \frac{5i^3t^4}{7})-2 " align="absmiddle" class="latex-formula">

Answer 1

Simplify the following:
(5 i^3 t^4)/7 - 2
i^3 = i^2×i = (-1) i = -i:
(5×-i t^4)/7 - 2
Put each term in (5 (-i) t^4)/7 - 2 over the common denominator 7:
(5 (-i) t^4)/7 - 2 = (-5 i t^4)/7 - 14/7:
(-5 i t^4)/7 - 14/7
(-5 i t^4)/7 - 14/7 = (-5 i t^4 - 14)/7:
Answer:  (-5 i t^4 - 14)/7

Answer 2

I^3= -1 
$\frac{5i^{3}t^{4} }{7} = -\frac{5it^4}{7}$

$\frac{5i^{3}t^{4} }{7} = -\frac{5it^4}{7} = answer-2- \frac{5t^4}{7}i$