elpr1nc1 elpr1nc1

14-04-2015
Mathematics

Answered

What is the solution of X2-9x+18=0

Verified Answer :

Panoyin Panoyin

14-04-2015

x² - 9x + 18 = 0
x = -(-9) +/- √((-9)² - 4(1)(18))
   2(1)
x = 9 +/- √(81 - 72)
   2
x = 9 +/- √(9)
2
x = 9 +/- 3
   2
x = 4.5 + 1.5
x = 4.5 + 1.5 x = 4.5 - 1.5
x = 6 x = 3

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