(2-a)^2 + 3(2-a)
A^2 -2a + 4 + 6 -3a
A^2 -5a +10
Answer:
Do 5x5 4 times
Step-by-step explanation:
Answer:
(−2)(2)+(3)(−5)
=−19
Step-by-step explanation:
Well what you would have to do is look for numbers that are easy to divide. For example, lets try 9000/10, and so the answer would be 900 and so if you divide the actually numbers, you could compare them, and see if 900 would be a reasonable.