Question

1) 2²-5×2-3
2) -2²-5×-2-3
3) -0,5²-5×-0,5-3

Answer 1

1. -9

2. 11

3. -0.25

Explanation:

1.

= 4-10-3

= 4-13

= -9

2.

= 4+10-3

= 14-3

= 11

3.

= 0.25+2.5-3

= 2.75-3

= -0.25