Question

Take away
(i) -5+4a² from 3+a+a²

Answer 1

Answer:

$3 + a + {a}^{2} - ( - 5 + 4 {a}^{2} ) \\ \\ = 3 + a + {a}^{2} + 5 - 4 {a}^{2} \\ \\ = 8 + a + {a}^{2} - 4 {a}^{2} \\ \\ = 8 + a - 3 {a}^{2}$

hope it helps uH :)

Answer 2

Answer: 8 - 3a² + a

Step-by-step explanation:

3+a+a²- -5+4²  

First do 3 - -5, you get 8, the - cancel out as there are 2 of them, so they form a plus, one way of remembering this is if there are an odd number of minus symbols then the number you get will always decrease, but if there are an even number of minus symbols then the number will always increase.

Next do a² - 4a², you get -3a², we can’t add on a, as there isn’t any like terms to add it to. So we put the answer together now.

The answer is 8 +-3a², but wait we can cancel out the +.

The answer is 8 - 3a² + a.