By observing the concave nature of the polynomial graph , We can tell the leading coefficient is positive or negative .
Sums of terms with the form kxⁿ, where K is any number and N is a positive integer, are known as polynomials.
The term with the greatest x power is the leading term in a polynomial function. The leading coefficient is the coefficient of the leading phrase.
If the polynomial graph is concave downwards, The leading coefficient is negative.
If the polynomial graph is concave upwards, The leading coefficient is positive.
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