Question

If there are two distinct zeros, enter them separated by a comma. If there is a single zero, enter it. If there

Answer 1

Given that,

An equation : $y=x^2+9x+20$

To find,

The zeros of the above function.

Solution,

To find zero, put y = 0

$x^2+9x+20=0\\\\x^2+5x+4x+20=0\\\\x(x+5)+4(x+5)=0\\\\(x+4)=0\ \text{and}(x+5)=0\\\\x=-4\ \text{and}\ x=-5$

So, the zeros of the above quadratic equation is -4 and -5.