Question

Find the other zero of the quadratic polynomial y2 + 7y - 60 if one zero is -12

Answer 1

Answer:

The other root is 19.

Explanation:

In any quadratic equation, always remember this:

Let the zeroes/roots of the quadratic be m and n.

Sum of zeroes:

Sum of zeroes:

$m + n = \frac{ - b}{a}$

Product of zeroes:$mn = \frac{c}{a}$

Let n = -12

Using the first relation, we get:

$m - 12 = 7$

m = 19