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andreyandreev [35.5K]
3 years ago
8

Factor completely x^2 − 10x + 25.

Mathematics
2 answers:
Olenka [21]3 years ago
8 0
The answer is a.
x^2 -10x+25 = x*x-2*5*x+5*5 => (x-5)(x-5)
ivanzaharov [21]3 years ago
5 0
We're looking for two numbers that when multiplied, give 25, and when added, give -10.

Factoring 25 leads to 5*5 or -5*-5. The second alternative also fits -5+-5 = -10.

So (x-5)(x-5) is the factorization.
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<u>Answer:</u>

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<u>Explanation:</u>

The end points of diameter lie on circle. since the coordinates of end points of diameter may be evaluated using

d= \sqrt{(10-5)^ 2-(8-(-4))^ 2}

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therefore d = 13 .

The formulae of circumference comprises the length of radius of circle, hence find the radius as half of diameter length r=d/2 = 13/2 = 6.5 ; circumference of circle =2\pi r

                                       = 2x3.14xr

                                       = 13x3.14 units.

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