Question

2 x (c^2 -5) for c=4

Answer 1

22

Explanation:

PEMDAS

4^2 = 16

16 - 5 = 11

11 x 2 = 22

Answer 2

22

Explanation:

2 (c^2 -5)

Let c=4

2 (4^2 -5)

PEMDAS

Parentheses first,

(4^2 -5)

Exponents

16-5 =11

Replace into expression

2(11)

22