What are the roots of the equation #x^2 - 5x - 36 = 0#?

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Answer 1 · 2018-03-20T03:30:10

#x=9 or x=-4#

We can solve this quadratic equation using factorisation method as follows #:#

#x^2-5x-36=0#

#x^2+4x-9x-36=0#

#x(x+4)-9(x+4)=0#

#(x+4)×(x-9)=0#

#x+4=0 or x-9=0#

#x=-4 or x=9#