Question

How do you know how many solutions 2x2+5x−7=0 has?

Answer 1

2x2=4

4+5x-7=0

+5x=0-4

5x=-4

x=-4/5

Answer 2

this is a quadratic equation. the degree of a quadratic equation is 2,and hence will have 2 solution.

if it is a cubic polynomial, then the degree of cubic polynomial would be 3 and the number of solution would be 3.

ex:

degree of polynomial: x² -4x+3

here degree of polynomial is 2.

hope this will help you

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