What number must you add to complete the square x^2+4x=12

Mathematics

2 answers:

Fudgin [204]3 years ago

8 0

Answer:

Step-by-step explanation:

to be honest I really don’t know necause the equation is actually solveable just the way it is

Keith_Richards [23]3 years ago

6 0

Answer:

Step-by-step explanation:

The form ax²+bx+c=d to find the number to add you do

(b/2)² so

(4/2)²=

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Really not understanding this

Setler79 [48]

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6 0

3 years ago

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Lana71 [14]

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5 0

4 years ago

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Of the cars in the parking lot, 20% are silver. If 20% of the cars is 48 cars, what is the total number of cars in the parking l

astraxan [27]

To solve this, we are going to set up a simple rule of three: If 20% are 48 cars, 100% how many cars will be:
$\frac{20----\ \textgreater \ 48}{100----x}$
Now, we can express this as a proportion ans solve for $x$ :
$\frac{20}{100} = \frac{48}{x}$
$x= \frac{(100)(48)}{20}$
$x=240$

We can conclude that there are 240 cars in the parking lot.

3 0

3 years ago

The table shows input and output values of the function y = x2 + 12x – 2. What is an approximate solution of the equation x2 + 1

romanna [79]

Answer:

The solutions for the equations are x = 0.1644 and x = -12.1644

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .