Explanation:
is there is any sighn b/n -5x^2 and 15x cause if they r multiplying then it must be writen as -75x^3 but if there isn't
u will say
-75x^3 + 10 = 0
-75x^3 = -10
x^3 = -10/-75
x^3 = 2/15
x = (2/15)^1/3
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