Question

x2-16=0 factories
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Answer 1

Answer:

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Answer 2

$\huge{ \bf{ \underline{ \underline{question}}}}$

${x}^{2} - 16 = 0$

$\huge{ \bf{ \underline{ \underline{solution}}}}$

${x}^{2} - 16 = 0 \\ \implies \: x = \frac{ - b + \sqrt{ {b}^{2} - 4ac } }{2a} \\ \implies \: a = 1 \\ \implies \: b = 0 \\ \implies \: c = - 16 \\ \implies \: x = \frac{ - 0 + \sqrt{ {0}^{2} - 4( - 16)} }{2} \\ \implies \: x = \frac{0 + \sqrt{0 - 4 \times 1(16)} }{2(1)} \\ \implies \: x = \frac{0 + \sqrt{0 + 64} }{2(1)} \\ \implies \: x = \frac{0 + \sqrt{0 + 64} }{2(1)} \\ \implies \: \frac{0 + \sqrt{64} }{2 } \\ \implies \: x = \frac{0 + 8}{2} \\ \implies \: x = - 4$

$\huge{ \bf{ \green{ \underline{ \underline{hence \: verified}}}}}$

$x = - 4$