Question

find the root for the quadratic equation of x^2-16=0​

Answer 1

Answer:

+4,-4

Step-by-step explanation:

x²-16=0

or, x²=16

or, x=+4 or -4

Answer 2

Answer:

Solution set  = {-4 , 4}

Step-by-step explanation:

x^2 - 16

using identity (a^2 - b^2) = (a + b) (a - b)

(x)2 - (4) = (x + 4) (x - 4)

Case 1: (x + 4) = 0

x = - 4

Case 2: (x - 4) = 0

x = 4

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