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Phantasy [73]
4 years ago
8

X^2-81=0 solve the question

Mathematics
2 answers:
WARRIOR [948]4 years ago
8 0

Answer:

9 and -9

Step-by-step explanation

add 81 to both sides

take square root of both sides

NeTakaya4 years ago
3 0

Answer:

x=+9,-9

Step-by-step explanation:

x^2-81=0\\x^2=81\\x=\sqrt{81}\\x=9,-9

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3 years ago
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4 years ago
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