Sagot :
Step-by-step explanation:
f(x) × g(x)
= (x2 + 5x )× (3x2 -4x )
=3x4 + 15x3 - 4x3 -20x2
3x^4 + 11 x3 - 20x2
[tex]\large \mathfrak{Solution : }[/tex]
f (x) = x² + 5x
g (x) = 3x² - 4x
f (x) * g (x) :
- [tex]( {x}^{2} + 5) \times (3 {x}^{2} - 4x)[/tex]
- [tex]3x {}^{4} - 4 {x}^{3} + 15 {x}^{2} - 20x[/tex]