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12.6 • 12.6 + 21•21=x2
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2 votes
12.6 • 12.6 + 21•21=x2

User Martie
by
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1 Answer

2 votes

Use PEMDAS to solve the equation.

Multiply 12.6 by 12.6, and then 21 by 21.

12.6 × 12.6 = 158.76‬

21 × 21 = 441

The equation is now 158.76‬ + 441. Add the two together.

158.76‬ + 441 = 599.76

Now divide 599.76 by 2 to find x.

599.76 ÷ 2 = 299.88

Answer:

x = 299.88

User Kryger
by
3.2k points
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