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MAXImum [283]
3 years ago
14

Which of the following is the solution to the quadratic equation x2−10x+21=0 ?

Mathematics
2 answers:
Annette [7]3 years ago
7 0

Step-by-step explanation:

the answer is the image above

Bess [88]3 years ago
3 0

Answer:

x=3  and x=7

Step-by-step explanation:

x2 - 10x + 21=0

a=1, B=-10, c=21

delta= b2 - 4(ac)

if delta >0 => have two answer

x1= -b - _/delta / 2a = -(-10) - _/16 / 2.1 = 3

x2= -b + _/delta /2a = -(-10) + _/16 / 2.1= 7

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liraira [26]

Answer:

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Step-by-step explanation:

(2z - 1)(z^2 – 2z+ 1) =

= 2z^3 - 4z^2 + 2z - z^2 + 2z - 1

= 2z^3 - 5z^2 + 4z - 1

8 0
2 years ago
In Alaya’s home state, an individual’s income tax is calculated as follows:
Stolb23 [73]
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3 years ago
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here is the work:

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3 years ago
Number Theory- Find all sets of the two consecutive positive integers with a sum that is at least 8 and less less than or equal
leva [86]

Answer:

Step-by-step explanation:

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8 0
2 years ago
4(3x-6)=6(-4+2x) solve and show work
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