Question

Solve the quadratic equations by factorization method x² -9 = 0
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Answer 1

Answer:

x=3

Step-by-step explanation:

x^2=0+9

x^2=9

x^2=3^2

x=3

Answer 2

Answer:

x = ±3

Step-by-step explanation:

Given quadratic equation,

x² - 9 = 0

x² - 3² = 0

(a² - b²) = (a + b) (a - b)

(x + 3) (x - 3) = 0

(x + 3) = 0 => x = - 3

(x - 3) = 0 => x = +3