Use the discriminant to determine the number of real solutions of the equation. x^{2}+2.20x+1.21=0

Dottie Parra

Dottie Parra

Answered question

2021-03-25

Use the discriminant to determine the number of real solutions of the equation.
x2+2.20x+1.21=0

Answer & Explanation

ottcomn

ottcomn

Skilled2021-03-27Added 97 answers

Step 1
Concept − If we have a quadratic equation of the form −
ax2+bx+c=0
Then,
Discriminant is given by, D −
D=b24ac
Cases-
If D=0, roots are real and same
If D>0, roots are real and different
If D<0, both the roots are complex numbers
Step 2
Given quadratic equation −
x2+2.20x+1.21=0
D=(2.20)24(1)(1.21)
D=0
Hence, Both the roots are real and same.

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