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Rama09 [41]
3 years ago
14

The sum of twice a number and 5 less than the number is the same as the difference between 17 and the number

Mathematics
1 answer:
Valentin [98]3 years ago
6 0
The sum of twice a number                            (x^2)
and 5 less than the number                             -5
 is the same as                                                  =
 the difference between 17 and the number  17-x

(x^2) - 5 = 17 - x
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shasta claimed that the equation x^2+25=0 can be solved by using its factored form of (x+5i)^2=0, and that -5i is the only zero
Elanso [62]

Answer:

The given equation will have two roots as +5i and -5i

Step-by-step explanation:

Shasta claimed that the equation x^2+25=0 can be solved by using its factored form of (x+5i)^2=0, and that -5i is the only zero for this function

The given equation is x^2+25 =0

This clearly shows it will have complex roots, and since it is a quadratic equation it will have 2 complex roots

x^2 = -25 \\x = \sqrt{-25} \\x= \sqrt{-1}* \sqrt{25}\\

x = i\sqrt{25}

x = ± 5i

It will be false to say that -5i will be the only complex root to this equation.

The given equation will have +5i and -5i as its roots.

Lets verify

x = +5i

(5i)^2 + 25 \\25i^2 + 25 \\25(-1) + 25\\-25 + 25 = 0

x = -5i

(-5i)^2 + 25 \\25i^2 + 25 \\25(-1) + 25 \\-25 + 25 \\ = 0

3 0
3 years ago
Solving and Simplifying Equations <br> 5r = -3(r +3) +7
Ray Of Light [21]

Answer:

-2/8

Step-by-step explanation:

-3r-9+7=5r

-2=5r+3r

r=-2/8

hope this helped you( ꈍᴗꈍ)

6 0
3 years ago
Read 2 more answers
Can help with this please​
madam [21]

Answer:

m∠8 = 4x

Step-by-step explanation:

Angle 8 is the same angle measure of angle 1, which is m∠1 = 4x

7 0
4 years ago
What is 0.04 times 7.6? Using ur work
WARRIOR [948]
Well, you'll multiply regularly, then move da decimals to the left 3 times, because if you add the amount of decimal places in 0.04 and 7.6, (2 + 1), it equals 2, but so 0.04 times 7.6 = 0.304
I hope I helped! =D
5 0
3 years ago
Pls help will give brainliest and 5star
ryzh [129]

Square

Isosceles Triangles

Isosceles Trapezoids

Parallelogram

7 0
3 years ago
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