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The x^5 at the beginning makes the degree of the polynomial 5.
pretty sure a third degree polynomial is just one that has a term to the power of 3 eg. x3 + 4x2 + 3x + 5
The degree is the highest power of the variable that appears in it.(x2 + x + 9) is a second degree polynomial(Q4 - 72) is a fourth degree polynomial( z ) is a first degree monomialSo the degree of a polynomial in one variable is the highest power of the variable.For example, [ 2x3 - 7x ] has degree 3.The degree of a polynomial in two or more variables is the greatest sum of theexponents in any single term.For example, [ 5m3 + m2n - mn2 ] has degree 4.And a degree of a monomial is the sum of the exponents of its variables.For example, [ 4a2b3 ] has degree 5.
The degree of a polynomial is the highest power that appears in the polynomial. For more than one variable, you must add the powers for each variable, for example, a3b2 is of degree 3 + 2 = 5.
This is due to the zero-product property. In principle, any polynomial equation of degree 2 can be factored as: (x - a)(x - b) = 0 Here is a specific example: (x - 5)(x + 3) = 0 Now, if the product of two factors is zero, it follows that one of the two factors is equal to zero; so the above becomes: x - 5 = 0 OR x + 3 = 0 Solving the individual parts, you get the two solutions. Of course, it is possible that the two factors happen to be the same; in this case, the polynomial is said to have a "double" root (i.e., a double solution). Similarly, a polynomial equation of degree 3 can be separated into 3 factors, a polynomial of degree 4 can be factored into 4 factors, etc.