Mathematics
alexamalik143
32

Can someone please explain to me how you solve this problem? Thanks ;)

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(2) Answers
Deshawn

It is the first one you put the number that equals to 9 

Palczynski235

quadratic eqn is  ax^2 + bx + c = 0 and x can be solved by ,,=> x = {-b +- root (b^2- 4ac)  } / 2a so, here eqn 3rd and 4th are most approp. solved using above sol. hope it helped a bit

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