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3 years ago

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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kompoz [17]

Answer:

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Step-by-step explanation:

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