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Irina-Kira [14]
3 years ago
13

X^2+4r=-4

Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

The root is x = -2

Step-by-step explanation:

1. Add 4 on both sides.

x^2 + 4r + 4 = 0

2. What two numbers, if added together and multiplied together, give 4?

2 and 2.

3. Factor

(x+2)(x+2)=0

4. Solve

x = -2 (There is only one root for this quadratic equation.)

Please give me brainliest is this is right. Than you!

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Answer:

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Step-by-step explanation:

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3 years ago
The top surface of a world-record rectangular strawberry shortcake was 175.33 ft long and 48 inches wide. Use the formula for pe
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Explanation:
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4 0
4 years ago
Write the augmented matrix for each system of equations. 9x-4y-5z=9 7x+4y-4z=-1
lakkis [162]
\left[\begin{array}{ccc|c}9&-4&-5&9\\7&4&-4&-1\end{array}\right]
4 0
3 years ago
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Correct answers only for number 31
Ivahew [28]

base: b

height: b

A = 1/2 (b · b)   = 1/2(b²)   = b²/2

sum is  six less than area

b + b =  6 - ↔b²/2

2b = b²/2 - 6

4b = b² - 12         <em>multiplied by 2 to clear the denominator</em>

0 = b² - 4b - 12

0 = (b - 6)(b + 2)

0 = b - 6          0 = b + 2

b = 6                  b = -2 (Negative so disregard)

A = b²/2  = (6)²/2   = 36/2   = 18

Answer: 18 units²





6 0
3 years ago
Solve: 6(1-3) = 2(9-21)
lukranit [14]

Answer:-12=-24 FALSE

Step-by-step explanation:

6-18= -12

18-42= -24

The statement is false

<!> Brainliest is appreciated! <!>

8 0
3 years ago
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