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2 years ago

What number would you add to both sides of x2 + 7x = 4 to complete the square?

Mathematics

2 answers:

pashok25 [27]2 years ago

8 0

Answer

12.25

Explanation

x² + 7x = 4

The number that should be added on both sides is the square of half the coefficient of x.

That is (7/2)².

(7/2)² = 7²/2²

= 49/4

= 12.25

∴ x² + 7x + 3.5² = 4 + 12.25

(x + 3.5) ² = 16.25

galina1969 [7]2 years ago

8 0

Answer:(7/2)2

Step-by-step explanation:the answer is (7/2) to the second power.

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Answer:

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Step-by-step explanation:

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- x = - 48 ( multiply both sides by - 1 )

x = 48

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PilotLPTM [1.2K]

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Misha Larkins [42]

Answer:

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2 years ago

Factor completely 3x2 − 11x 8. (x 4)(3x − 2) (x − 2)(3x − 4) (x 1)(3x − 8) (x − 1)(3x − 8).

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The factors of the equation $3x^{2} -11x+8$ will be $(3x-8)(x-1)$

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Thus the factors of the equation $3x^{2} -11x+8$ will be $(3x-8)(x-1)$

To know more about the factors of quadratic equation follow

brainly.com/question/1214333

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