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Neko [114]
3 years ago
6

Solve for x... I dont know what to do with the square root

Mathematics
1 answer:
Artemon [7]3 years ago
8 0
√(x²+13)=2+x
[√(x²+13)]² = (2+x)²
x²+13=4+4x+x²
x²-x²-4x=4-13
-4x=-9
x=-9/-4
x=9/4

To check:
√(x²+13)=√(81/16  +13)=√[(81+208)/16]=√(289/16)=17/4.
2+x=2 + 9/4=(8+9)/4=17/4

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If x^2=20 what is the value of x will give brainliest for answer
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Answer:

x² - 20 = 0

Using the quadratic formula

x =  \frac{ - b± \sqrt{( {b})^{2} - 4ac } }{2a}

a = 1 b = 0 c = -20

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Hope this helps you.

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3 years ago
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lara31 [8.8K]
Let the angles be x and (180-x).

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3 years ago
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Scorpion4ik [409]

Answer:

If f(−x) = −f(x), then the graph of f(x) is symmetrical with respect to . A function symmetrical with respect to the y-axis is called an even function. A function that is symmetrical with respect to the origin is called an odd function.

8 0
3 years ago
What’s the positive square root of 9
vredina [299]

Answer:

3

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
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Step-by-step explanation:

base is 12, hypotenuse is 20

so X² is h²-b²

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