Question

Expand by using suitable identities:
(i) (5x + 11)2

(ii) (9x − 10)2

(iii) (−3x + 5)(3x + 5)

Answer 1

Answer:

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1] (5x+11)²

➡(️ 5x)² +( 11)² + 2×5x×11

➡️ 25x² + 121 + 110x

2] (9x-10)²

➡️ (9x)²+(10)²-2×9x×10

➡️ 9x²+100-180x

Answer 2

Answer:

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Step-by-step explanation:

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