Question

how is quadratic equation different from linear equation justify

Answer 1

an equation having highest degree of 2 is called aquadratic and an equation having hidhest degree 1 is called a linear equation

Answer 2

Quadratic equations has degree 2,and is defined for 1 type of unknown. for eg
${x}^{2} + 2x + 3 \\ 2 {y}^{2} - 7y + 5$
linear equations has degree one for eg
$2x + 1 \\ 5y + 6$