Answer :

tikosamxaradze2005

for 2 answers are -6/5, -3 and 3

Step-by-step explanation:

i don't know answer for 1 and 3 but i can help u with 2

5x^3 + 6x^2 - 45x - 54

x^2( 5x + 6) -9(5x-6)

(5x+6)(x^2 - 9)

5x+6=0 x^2-9=0

5x= -6 x^2= 9

x= -6/5 x= -3 or 3

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