Question

Question
If 7( ² + ) + = 0 has equal roots, Find the value of .​
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Answer 1

Step-by-step explanation:

Answer

Correct option is

A

No real roots

Given equation is x

2

−5x+7=0

Hence, a=1,b=−5,c=7

Therefore discriminant =D=b

2

−4ac

=25−4(7)

=25−28

=−3

Hence, D<0

Therefore, there are no real roots of this equation.

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Answer 2

Answer:

⇒0=x

3

−12x−6x+42+84−49x

0=x

3

−67x+126

= -9