Class 10

Math

All topics

Quadratic Equations

The mentioned equation is in which form?

$z−z7 =4z+5$

- Linear
- Quadratic
- cubic
- None of these

**Correct Answer: ** Option(b)

**Solution: **Given,

$z−z7 =4z+5$

$⇒zz_{2}−7 =4z+5$

$⇒z_{2}−7=4z_{2}+5z$

$⇒3z_{2}+5z+7=0$

The highest power of z is 2. Hence, it is a quadratic equation.