Find the square of:

[tex]i) \: 2a \: + \: b [/tex]
[tex]ii) \: 3a \: + \: 7b[/tex]


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1 thought on “Find the square of:<br /><br />[tex]i) \: 2a \: + \: b [/tex]<br />[tex]ii) \: 3a \: + \: 7b[/tex]<br /><br /><br />​”

1. Step-by-step explanation:

   1. (2a+b)²

   =(2a)² + 2×2a×b + b²

   = 4a²+4ab+b²

   2. (3a+7b)²

   = (3a)²+2×3a×7b+(7b)²

   =9a²+42ab+49b²

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