Question

Determine the nature of roots of quadratic equation x2 - 5x - 7=0​

Answer 1

Answer:

sign mistake

Given equation is x²-5x+7

Hence, a=1,b=−5,c=7

Therefore discriminant =D=b²-4ac

=25−4(7)

=25−28

=−3

Hence, D<0

Therefore, there are no real roots of this equation.

Answer 2

Answer:

x2-5x=7

X2=7+5x

X2=12x

x=12x÷2

x=6x