Answer:
y = x² + 2x - 7
Explanation:
The standard form of a quadratic is y = ax² + bx + c : a ≠ 0
Given
y = (x + 1)² - 8 ← expand factor using FOIL
= x² + 2x + 1 - 8
= x² + 2x - 7 ← in standard form
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