Mathematics
Solve the following equation by factorisation:
x2 - 16 = 0
Quadratic Equations
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Answer
Given,
⇒ x2 - 16 = 0
⇒ (x)2 - (4)2 = 0
⇒ (x + 4)(x - 4) = 0
⇒ x + 4 = 0 or x - 4 = 0 [Using Zero-product rule]
⇒ x = -4 or x = 4.
Hence, x = -4 or x = 4.
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