Question

x²+2x-10=0 solve by factorisation method​

Answer 1

Answer:

x²+2x-10=0

Formula

x=(-b+√(b²-4ac))/2a

or

x=(-b-√(b²-4ac))/2a

here a=1,b=2,c=-10

x=(-2+√(2²-(4.1.-10)))/2.1

=(-2+√(4-(-40)))/2

=(-2+√(4+40))/2

=(-2+√44)/2

=(-2+√(11.2.2))/2

=(-2+2√11)/2

=-1+√11

or x=-1-√11