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strojnjashka [21]
3 years ago
15

What value added to x2 + 2x would complete the square

Mathematics
2 answers:
Hoochie [10]3 years ago
8 0
To find the value take the b and divide it by two. then square it. here your b value is 2 so 2/2 is 1. squared is. 1.

Talja [164]3 years ago
5 0

Answer:

1 would complete the square

Step-by-step explanation:

In order to solve this you have to remember the formlua for the perfect quadratic trinomial:

a^2 + 2 ab +b^2=0

IN the example you have A^2 and 2ab, since A=1, then the 2x will resulto from the multiplication of b and a multiplied by 2, so we just have to divide 2x by 2x to get b:

\frac{2x}{2x}=1

So we get that b is 1.

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agasfer [191]

Answer:eight more than three times a number is negative nineteen:. 3x+8 = -19 3x = -27 x = -9. the difference four times a number and nine is three. 4x-9 = 3 4x = 12 x = 3. ten less than the product of two and a number is negative twelve. 2x-10 = -12 2x = -2 x = -1. Done.

Step-by-step explanation:

6 0
3 years ago
After six weeks the tomato plant that was given extra food and water was 26 cm tall . The tomato plant that was not given any ex
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4/10-3/10<br><br><br> how do i do this please hurryyyy
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Answer:

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Step-by-step explanation:

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3 years ago
Which equation shown below represents the equation of the inverse of the quadratic function shown below?
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If X = 16 feet and Y = 8 feet, what is the area of the figure above ? Use 3.14 for pi .
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Answer:

A

Step-by-step explanation:

You can probably figure out the rectangle of 16 by 8 so no explaining there. 16×8=128. You know that diameter of the cirkel is equal to y so 8. The diameter of a cirkel is two times its radius. so 8=2r. r=4. The area of a cirkel is calculated by the formula \pi×r^2. Fill in r=4 in \pi×r^2 gives us \pi×4^2=16\pi. You only have half of the cirkel so 16\pi/2=8\pi. 128+8\pi=153.12 which is A.

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