3 years ago

Make the expression below a perfect square by adding in a constant value: x^2+14x+_

1 answer:

lina2011 [118]3 years ago

7 0

[x^2 + 14x + (1/2•14)^2] - (1/2•14)^2

= [x^2 + 14x + (7)^2] - (7)^2

= (x+7)^2 - 49

If you need an explanation as to how, you can go ahead and ask

You might be interested in

Solve for x<br><br> Help me please

ozzi

Answer:

x = 42.5

Step-by-step explanation:

A triangle inscribed inside of a circle using the diameter of the circle as it's hypotenuse is a right triangle ( a 90 degree triangle ) where the angle opposite of the hypotenuse is the 90 degree angle ( angle C )

Hence angle C = 90

If angle C = 2x + 5

Then 2x + 5 = 90

Notice that we just created an equation that we can use to solve for x

We now solve for x algebraically

2x + 5 = 90

Step 1 subtract 5 from both sides

2x + 5 - 5 = 90 - 5

Outcome: 2x = 85

Step 2 divide both sides by 2

2x/2 = 85/2

Outcome: x = 42.5

5 0

2 years ago

Non proportional or proportional

Elan Coil [88]

Non proportional it should be

4 0

2 years ago

Find a 3 by 3 magic square using numbers 2,5,8,12,15,18,22,25,29

Oksi-84 [34.3K]

I could not get it to work with all of those numbers. The only number that caused an issue was 29. I used 28 instead and it worked. I'm not sure if 29 was a typo, but I couldn't get 29 to work.