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3 years ago

When is it most appropriate to use the completing the square method to solve a quadratic equation?

Mathematics

1 answer:

mash [69]3 years ago

4 0

Answer:

Don't forget to include a ± sign in your equation once you have taken the square root. Next, if the coefficient of the squared term is 1 and the coefficient of the linear (middle) term is even, completing the square is a good method to use. Finally, the quadratic formula will work on any quadratic equation.

Step-by-step explanation:

x² + 4x = 15 can be solved best using the completing the square method.

2x(x−3)=0 can be best solved using the zero product property.

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Salsk061 [2.6K]

Answer:

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Step-by-step explanation:

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3 years ago

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katovenus [111]

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Step-by-step explanation:

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3 years ago

A man that is 6 feet tall is standing so that the tip of his shadow is 20 feet from a light pole. His shadow is 8 feet long. Wha

pychu [463]

Answer:

The answer to your question is: the height of the light pole is 15 ft.

Step-by-step explanation:

See the picture below

Now, we can do proportions to finds the height of the light pole

$\frac{20}{8} = \frac{x}{6}$

Solve for x

x = 6(20) / 8

x = 120 / 8

x = 15 ft

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3 years ago

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ehidna [41]

two hundred and eighty five

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3 years ago

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Somebody help me with this please .

erastova [34]

Step-by-step explanation:

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b = 12/V3

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b/Sin90° = 6/ sin 60°

b = 6

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b× V3 = 6

b = 6× 2/V3

= 12/V3

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4 years ago