Question

The zeroes of the quadratic polynomial x² – 15x + 45are

both negative

one positive and one negative

both positive

both equal​

Answer 1

Answer:

x²-15x+45=0

a=1,b=15,c=45

-b±√b²-4ac/2a=

-15±√225-4(45)/2

-15±√225-180/2

-15±√45/2=

-15±3√5/2

-15+3√5/2,-15-3√5/2