8) Evaluate
if x=-1 and y=2 2x² - y2
Answers
Answered by
2
(3x4y2) (2x2y3)
(3 × 14 × 22) × (2 × 12 × 23)
(3 × 1 × 4) × (2 ×1 ×8)
= 12 × 16 = 192
Answered by
1
Answer:
410
Step-by-step explanation:
21²-22
=21×21-22
=441-22
=419
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