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SVEN [57.7K]
3 years ago
15

Please help me with Alegbra 2!! Solve x2 + 4x + 1 = 0.

Mathematics
2 answers:
Julli [10]3 years ago
7 0
x^2+4x+1=0\\\\\underbrace{x^2+2x\cdot2+2^2}_{(x+2)^2}-2^2+1=0\\\\use\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2-4+1=0\\\\(x+2)^2-3=0\\\\(x+2)^2=3\iff x+2=\sqrt3\ or\ x+2=-\sqrt3\\\\\boxed{x=\sqrt3-2\ or\ x=-2-\sqrt3}
IceJOKER [234]3 years ago
5 0

Answer:

C on edgenunity

Step-by-step explanation:

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The expression equivalent to ∛162 is ∛6 × ∛27

<h3>What is the cube root of a number?</h3>

The cube root of a number is a number a such that when another number, b multiplies itself 3 times, we get a.

So,

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<h3>What is a perfect cube?</h3>

A perfect cube is a number such that its cube root which is an integer or whole number.

<h3>How to find ∛162.</h3>

Since we have ∛162.

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This will give us the same result  if we multiplied through by 12.


7 0
3 years ago
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