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