Which is equal to Which is equal to 2 – (4 – 5)2?

0

–1

1

2

1

Step-by-step explanation:

We want to evaluate

We apply PEDMAS to simplify.

First, we simplify the parenthesis to get:

We now simplify exponents to get:

You can now subtract 1 from 2 to get:

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1