## anonymous 4 years ago Solve the quadratic equation y2 - 5y = -4 by factoring

1. anonymous

add 4 to both sides first.

2. abb0t

add the 4 and set it equal to zero. So: $y^2-5y+4=0$

3. abb0t

You're next step is to find two numbers(a and b) when multiplied give you -5, but when added result in +4. Those two numbers will make up: $(x \pm a )(x \pm b)$ where a and b are real numbers.

4. anonymous

It's the other way around. When you multiply them you get +4 and when you add them you get -5

5. anonymous

Thank you so much!