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mixer [17]
2 years ago
15

Solve the equation: √2 + 4 - 1 = 2 A) ±x= √5 B) ±x = √13 OC) x= 3 D) x = 5

Mathematics
2 answers:
Keith_Richards [23]2 years ago
6 0

Answer:

Step-by-step explanation:

1) Separate terms with roots from terms without roots.

x^2+4=\sqrt[\frac{1}{2} ]{4+1}

2) Simplify 4 + 1 to 5.

x^2+4=\sqrt[\frac{1}{2} ]{5}

3) Invert and multiply.

x^2+4=5^2

4)  Simplify  5^2 to 25.

x^2+4=25

5) Subtract 4 from both sides.

x^2=25-4

6) Simplify 25 - 1 to 24.

x^2=21

7)  Take the square root of both sides.

x=\pm\sqrt{21}

VashaNatasha [74]2 years ago
6 0

Answer:

A

Step-by-step explanation:

\sqrt{x^{2}+4}-1=2\\\sqrt{x^{2}+4}=3\\x^{2}+4=9\\x^{2}=5\\x=(plus/minus) \sqrt{5}

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Answer:

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Step-by-step explanation:

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Based on the given conditions, corresponding exponents are equal:

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Rearrange unknown terms to the left side of the equation:

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Combine like terms: x=-3-8

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Answer:

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Step-by-step explanation:

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