Question

If the factors of a quadratic function are (x + 2) and (x − 9), what are the x-intercepts of the function?

Answer 1

Answer:

-2, 9

Step-by-step explanation:

( x + 2 ) ( x - 9 ) = 0

⇒ Either ( x + 2 ) = 0 ( or ) ( x - 9 ) = 0

Case (i) : x + 2 = 0 ⇒ x = 0 - 2 ⇒ x = -2

Case (ii) : x - 9 = 0 ⇒ x = 0 + 9 ⇒ x = 9

∴ x intercepts of given equation are -2 and 9

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