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सर्वसमिका का उपयोग करते हुए निम्नलिखित ...

सर्वसमिका का उपयोग करते हुए निम्नलिखित वर्गों को ज्ञात कीजिए :
(i) `(b-7)^2`
(ii) ` (xy+3z)^2`
(iii) ` (6x^2-5y)^2`
(iv) ` ((2)/(3)m+(3)/(2)n)^2`
(v) ` (0.4-0.5q)^2`
(vi) `(2xy+5y)^2`.

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