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2 years ago

Please can someone help me on these? solve this equation by factorising: 2x^2 + 5x + 2 = 0

1 answer:

7 0

$2x^2 + 5x + 2 = 0\\
2x^2+4x+x+2=0\\
2x(x+2)+1(x+2)=0\\
(2x+1)(x+2)=0\\
x=-\frac{1}{2} \vee x=-2$

$x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
x-2 =\sqrt3 \vee x-2=-\sqrt3\\
x=2+\sqrt3 \vee x=2-\sqrt3$

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Igoryamba

Answer: second option.

Step-by-step explanation:

You must apply $sin\alpha=\frac{opposite}{hypotenuse}$

Then, given the right triangle and the angle D, the opposite side and the hypotenuse of the triangle are the following:

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Therefore, when you substitute values, you have:

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3 years ago

Read 2 more answers

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Yanka [14]

Answer:

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Step-by-step explanation:

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2 years ago

Factor the following quadratic.<br> y=2x^2 - 5x - 3

Reptile [31]

Answer:

(2x + 1)(x - 3)

Step-by-step explanation:

$y = 2 {x}^{2} - 5x - 3$

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2 years ago

I need help please ?!!

melomori [17]

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2 years ago

The Miller family likes to paddle along the North River.

miss Akunina [59]

Answer:

4.7 miles per day.

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If it is meaning a total of 6 days traveling at half the speed

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2 years ago