2. 8x² + 16x + 8
Solution:
A = ½bh
A = ½(4x + 4)(4x + 4)
A = ½(16x² + 16x + 16x + 16)
A = ½(16x² + 32x + 16)
A = 8x² + 16x + 8
3. 4b² - 4b + 1
A = s²
A = (2b - 1)²
A = 4b² - 4b + 1
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