IDNLearn.com is your go-to resource for finding answers to any question you have. Our Q&A platform offers reliable and thorough answers to help you make informed decisions quickly and easily.
Answer:
-2a^2+3a-6
Step-by-step explanation:
a^2+a-1-(3a^2-2a+5)
=a^2+a-1-3a^2+2a-5
=-2a^2+3a-6