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Oliga [24]
2 years ago
5

Solve the equation x2-81 = 0.

Mathematics
2 answers:
Natasha2012 [34]2 years ago
7 0

Answer:

40.5

Step-by-step explanation:

x2 - 81 = 0 --> + 81 to both sides

2x = 81 --> divide by 2 on both sides

x = 40.5

vekshin12 years ago
5 0

Answer:

2x-81=0

2x=0+81

2x=81

x=<u>8</u><u>1</u>

2

x=40.5 <em><u>A</u></em><em><u>N</u></em><em><u>S</u></em><em><u>W</u></em><em><u>E</u></em><em><u>R</u></em><em><u>.</u></em>

<em><u>M</u></em><em><u>A</u></em><em><u>R</u></em><em><u>K</u></em><em><u> </u></em><em><u>M</u></em><em><u>E</u></em><em><u> </u></em><em><u>A</u></em><em><u>S</u></em><em><u> </u></em><em><u>A</u></em><em><u> </u></em><em><u>B</u></em><em><u>R</u></em><em><u>A</u></em><em><u>I</u></em><em><u>N</u></em><em><u>L</u></em><em><u>I</u></em><em><u>S</u></em><em><u>T</u></em><em><u> </u></em><em><u>P</u></em><em><u>L</u></em><em><u>Z</u></em><em><u>.</u></em>

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