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3 years ago

What number must be added to the polynomial to complete the square? x^2 + 7x

Mathematics

1 answer:

Virty [35]3 years ago

7 0

It could be: (x + 7/2)^2 = x^2 + 7x + 49/4
So you should add it by 49/4.

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Can someone help me with this

Jobisdone [24]

9+7=16 and 5+8=13
Hope i helped, please leave a thanks! Thanks!

5 0

3 years ago

LeRoy cut a length of string into 30

sukhopar [10]

Answer:

390 inches long

Step-by-step explanation:

The string = x

$\frac{x}{30} = 13$

$30 (\frac{x}{30} ) = 30(13)$

x = 390 inches

3 0

2 years ago

Select the correct answer.

Leno4ka [110]

Answer:it’s C

Step-by-step explanation:

6 0

2 years ago

If u subtract 17 from my number and multiply the difference by -7, the result is -35.What is my number

Kryger [21]

Let x = your number.

(x - 17) * -7 = -35. Divide each side by -7.

(x - 17) = 5. Add 17 to each side.

x = 22.

Your number is 22

5 0

3 years ago

Read 2 more answers

What is the solution of the linear-quadratic system of equations?<br> y=x^2+5x−3<br> y−x=2

Vsevolod [243]

Answer:

x = 1, y = 3

x = -5, y = -3

Step-by-step explanation:

Point Form:

(1,3) , (-5, -3)

4 0

2 years ago

Read 2 more answers