Determine the direction that this parabola opens y=-5x^2-10x-15
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It can be useful to know the prime factorization of the number:
Then, remember that the n-th root of a number is the same as that number to the 1/n-th power:
Finally, you have to remember the rule for raising a power to another power, i.e. you multiply the exponents:
Put together everything we said so far to write