Answer:
3
Explanation:
plug in 3 wherever y appears
3^2-2(3)
9-6
Hopes this helps
y² - 2y = 3
Given information,
→ y² - 2y
→ y = 3
Now the value of expression is,
→ (3)² - (2 × 3)
→ 3² - 6
→ 9 - 6 = 3
Hence, value of expression is 3.
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