kwhite746517 kwhite746517

26-04-2017
Mathematics

contestada

What does X to the second power minus 14x plus 49 equals

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Dabrainy1 Dabrainy1

26-04-2017

X= 3.5 because 14 times 3.5= 49?

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26-04-2017

x^2 - 14x + 49

2 numbers that multiplied equal 49
2 number that added equal -14

-7 times -7 = 49
-7 plus -7 = -14

(x-7) (x-7)

x=7

Answer Link

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