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1 year ago

0=x^2+2x-11 solve by completing the square

Mathematics

1 answer:

sweet-ann [11.9K]1 year ago

6 0

Answer:

Below in bold.

Step-by-step explanation:

x^2 + 2x- 11 = 0

x^2 + 2x = 11

x^2 + 2x + 1 = 11 + 1

(x + 1)^2 = 12

x + 1 = ±√ 12

x = -1 ± √12

= -4.464, 2.464 to the nearest thousandth.

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2 years ago

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2 years ago

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Natali [406]

Answer:

(a)

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(b)

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Step-by-step explanation:

(a)

Case 1

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Case 2

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(b)

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2 years ago

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OlgaM077 [116]

Answer:

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2 years ago