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lisabon 2012 [21]
3 years ago
11

Solve 2x2 + 8x - 12 = 0 by completing the square. Show step-by-step solution

Mathematics
2 answers:
Triss [41]3 years ago
5 0
<span>Factor out 2 x^2 +4x -6 = 0

Take half middle coefficient and square it:
x^2 +4x +4 -6 = 4 (x+2)^2
                       = 10 x+2
                       = sqrt(10) x
                       = +-sqrt(10) -2</span>
Arisa [49]3 years ago
3 0

Answer:

112

Step-by-step explanation:

i dont have a explanation i just have a answer.

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Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%2B%201%7D%7B2x%20-%201%7D%20%20-%20%20%5Cfrac%7Bx%20-%201%7D%7B2x%20%2B%201%
lubasha [3.4K]

x=0

because you must

determine the undefined range

write all numerators above the common denomonator

multiply the parenthesis

collect the alike terms

remove parenthesis

eliminate the opposites collect the like terms

set the numerator equal to 0

divide both sides by 6

check if thesolution is the defined range

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8 0
3 years ago
URGENTTT<br><br><br> 3+3 x 7^2 - 9 x 10
charle [14.2K]

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Step-by-step explanation:

8 0
3 years ago
Use the distributive property to express 15+45
Nuetrik [128]
<u><em>Answer:</em></u>
15(1+3)

<u><em>Explanation:</em></u>
<u>The distributive property can be generally expressed as follows:</u>
ab + ac = a(b+c)

<u>The given expression is:</u>
15 + 45

<u>We know that:</u>
15 = 1*15
45 = 3*15

<u>Therefore, the given expression can be written as:</u>
1*15 + 3*15

<u>Taking 15 as a common factor and applying the above rule, we will reach the following expression:</u>
15(1+3)

Hope this helps :)
5 0
4 years ago
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