Sagot :
Step by step answering the question
c. = ( a + 2 ) ( a - 1 )
= a² - 1 + 2a - 2
= a² + 2a - 1 - 2
= a² + 2a - 3
Step-by-step explanation:
brainliest me, I'm not gonna tell how I solve that, sorry, I can't answer letter a, b, c and d, but try to calculate to ( polynomial calculator ) in laptop, but don't do it again