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Solnce55 [7]
3 years ago
8

X^2 - 9 = 16 Solve for x

Mathematics
2 answers:
kaheart [24]3 years ago
8 0

Answer:

5

Step-by-step explanation:

x^{2} -9=16\\         x^{2} =16+9\\\sqrt{x} ^{2} =\sqrt{25\\

\sqrt{25} = 5

GREYUIT [131]3 years ago
7 0

Answer:

X = ±5

Step-by-step explanation:

X^2 - 9 = 16

Add 9 to each side

X^2 - 9+9 = 16+9

X^2  = 25

Take the square root of each side

sqrt(X^2 ) =±sqrt(25)

X = ±5

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