Question

Compare the given equation with $a{y}^2+by+c=0$ and select correct values of $a,b$ and $c$.

$\frac{x^2-7}{x}=7$

• A. $a=1,b=-1,c=-7$
• B. $a=1,b=7,c=-7$
• C. $a=1,b=-7,c=-7$
• D. $a=7,b=-1,c=-7$

Answer 1

The correct option is C $a=1,b=-7,c=-7$

Given equation is :

$\frac{x^2-7}{x}=7$

$x^2-7=7x$

$\therefore x^2-7x-7=0$

Comparing this equation with standard form $a{x}^2+bx+x=0$

We get $a=1,b=-7$ and $c=-7$