Respuesta :

emilypineda13

Answer:

(f⋅g)(x)=8x^2−2x−15

Step-by-step explanation:

To find the expression (f*g)(x), multiply f(x) into g(x) using the distribution property.

(f*g)(x) = (2x - 3)(4x + 5) = 8x² - 12x + 10x - 15 = 8x² - 2x - 15

sloth160
f(x)-g(x)
=(x2 +8x -9)
- (x2 -2x +15)
______________
(do this at calculator)
first , (x2-x2) = 0
second ,(+8x-(-2x)) = 10
third , (-9-(+15))= -24

=0+10x-24

you can try this on calculator by the brackets that i have shown you
in basic math
:when +(- = -
: when -(- = +
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