Answer:
We have to Evaluate the expression:
2x² + 2(3y - 1) - y²
Substitute x = -5 and y = 12 in expression, we get
⇛2(-5)² - 2(3×12 - 1) - 12²
⇛2(-5 × -5) - 2(36 - 1) - 12²
⇛2(25) - 2(35) - 12²
⇛50 - 70 - 12 × 12
⇛50 - 79 - 24
⇛50 - 103
⇛ - 53 Ans.
