Question

Evaluate the expression when x = 4 and y = 3. 2[(x - 1) + 2xy] A) 31 B) 40 C) 42 D) 54 E) 492

Answer 1

When You Evaluate the expression you the Answer D) 54

Answer 2

D

evaluate the contents of the square bracket before multiplying by 2

substitute x = 4 and y = 3 into the expression

=2 [ (4 - 1 ) + (2 × 4 × 3 )]

= 2[3 + 24] = 2 × 27 = 54 → D