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emmainna [20.7K]
3 years ago
12

- x² - 4x + 12 = 0 how do u solve by completing the square​

Mathematics
1 answer:
MrRa [10]3 years ago
8 0

Answer:

0

Step-by-step explanation:

Simplifying

x2 + -4x + -12 = 0

Reorder the terms:

-12 + -4x + x2 = 0

Solving

-12 + -4x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(-2 + -1x)(6 + -1x) = 0

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GaryK [48]

A. 1/5k - 2/3j and -2/3j + 1/5k

Step-by-step explanation:

Equivalent expressions are expressions that are the same even though they may appear different.When you plug in a value to represent a variable in these expression, they will give same answer when simplified.

In

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3 years ago
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21 is 84 percent of what number
marysya [2.9K]
Let the required no. be x then according to question
(84/100)*x = 21
x = 21*(100/84)
x = 2100/84
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hence the required no. is 25


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5 0
3 years ago
Find the measure of b.
Alika [10]

Answer:

b = 55°

Step-by-step explanation:

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Angles on the circumference subtended by the same arc are congruent, so

b = a = 55°

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3 years ago
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