## Nick2019 Factor each trinomial below. Please show your work and check your answer. 1)a2 – 5a – 20 one year ago one year ago

1. waterineyes

Is your question right?? Because it is not factorisable...

2. Nick2019

well thats what it said but i hered i might have to use quuadratic formula

3. waterineyes

Yeah I am thinking the same.. $a = \frac{5 \pm \sqrt{25 + 80}}{2} \implies a = \frac{5 \pm \sqrt{105}}{2} = ??$ This is not factorisable I think..