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Juli2301 [7.4K]

3 years ago

8

How do I find roots from a quadratic equation

1 answer:

Trava [24]3 years ago

6 0

Answer:The roots of any quadratic equation is given by: x = [-b +/- sqrt(-b^2 - 4ac)]/2a. Write down the quadratic in the form of ax^2 + bx + c = 0. If the equation is in the form y = ax^2 + bx +c, simply replace the y with 0. This is done because the roots of the equation are the values where the y axis is equal to 0.

Step-by-step explanation:

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Please can I have some urgent homework will mark anyone whjo does it as brainliest

polet [3.4K]

Answer:

<h2>210 cm³</h2>

Step-by-step explanation:

let V represent the volume of the triangular prism

V = base × height

base = (7×6)/2 = 42/2 = 21

height = 10

then

V = 21×10 = 210

7 0

3 years ago

Solve for x.<br><br> (x−2)^2+2=38<br><br> x= ___ or x= ___

Elan Coil [88]

Answer:

$x \: = \: \boxed{ \bold{ - 4 }}\: \: \text{or} \: \: x \: = \: \boxed{ \bold{ 8}}$

Step-by-step explanation:

$(x \: - \: 2 {)}^{2} \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 4 \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: - \: 38 \: = \: 0$

${x}^{2} \: + \: 4x \: - \: 8x \: - \: 32 \: = \: 0$

$x \: \times \: (x \: + \: 4) \: - \: 8(x \: + \: 4) \: = \: 0$

$(x \: + \: 4) \: \times \: (x \: - \: 8) \: = \: 0$

When it happens that the product of the factors is the same as zero. It is divided into two possible cases.

$x \: + \: 4 \: = \: 0 \\ x \: - \: 8 \: = \: 0$

We solve the two equations:

$x \: = \: - 4 \\ x \: = \: 8$

<h2>Answer: </h2>

$x \: = \: - 4 \\ x \: = \: 8$

<h3><em><u>MissSpanish</u></em></h3>

6 0

2 years ago

Could life live on earth if thare was oling oxygen in the air??????

Inga [223]

Nope you can't live on the earth without oxygen

8 0

3 years ago

Christy purchased an art easel at a garage sale for $30. She later sold the easel on Craigslist for $45. What was the percent in

Zielflug [23.3K]

The percent increase by 15%

4 0

2 years ago

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Enter the unknown number for n.<br><br> 12.66 − n = 7.64 Brainliest..........

Gemiola [76]

Answer:

Step-by-step explanation:

12.66-n=7.64

12.66-7.64=n

5.02=n

5 0

3 years ago

Read 2 more answers