please tell writeen in copy tell only ticked ones
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Answer:
a) 9a²
Explain :4+4=8,8+1=9
a power was already 2 and+1 so, a power was 3
Ans= 9a²
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Step-by-step explanation:
(a). 4a² + 4a + 1
= (2a)² + 4a + (1)²
= 2a² + 2×2a×1 + (1)²
= Therefore,. a²+2ab+b² = (a+b)²
= (2a+1)²
= (2a+1) (2a+1) Ans.
(f). 4x² - 12xy + 9
= (2x)² + 12xy + (3)²
= (2x)² + 2×2x×3 + (3)²
= Therefore, a²+2ab+b² = (a+b)²
= (2x+3)²
= (2x+3) (2x+3) Ans.
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