Question

Check whether the following are quadratic equation or not if they are quadratic equations write it in standard form (x +2)(x +5)​

Answer 1

Yes it is,

The standard form is ax+by+c=0

Thus the equation becomes (by using $(x+a)(x+b)=x^{2} +(a+b)x+ab$

=>$x^{2} +7x+10=0$

Hope this helps