What are the differences between monocot and dicot stems and roots?

''Monocots and dicots differ from one another in four structures: leaves, stems, flowers and roots. Here we will discuss difference between the roots of the monocot and dicot plant. In monocot roots, the pericycle present just produce the roots, whereas, in dicot roots, the pericycle gives rise to roots, cork cambium.''

Explanation:

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complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15