Question

prove that for real value of X the expression 3x²-6x+8 can never be less than 5​

Answer 1

According to algebric expression we can put the value of x by ourselves if not given .

After taking x=2

simply, 3(2) ²-6(2) +8

12-12+8

=8

Hence proved that the value of x is never be less than digit 5