Question

find the Roots of X2-7x+12​

Answer 1

Solution:

a=1,b=+7,c=+12

x=

2a

−b±

b

2

−4ac

x=

2×1

−(+7)±

7

2

−4×1×12

x=

2

−7±

49−48

x=

2

−7±1

x=

2

−7+1

or x=

2

−7−1

x=−3 or x=−4