Question

Find the zero if the polynomial p(x)= 5x² - 20​

Answer 1

Let:- P(x)= 5x²–20

Zero of the polynomial is the value of x where p(x)= 0

5x² - 20 = 0

⇒ 5x² = 20

⇒ x² = 20/5

⇒ x² = 4

⇒ x = +2 or -2

∴ The zero of the polynomial of the equation is +2 and –2.

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