Answers

2015-10-27T17:31:26+05:30
=4y^2+28yz+49^2
=(2y)^2+2*2y*7z+(7)^2
=(2y+7y)^2
 i hope that this will help u................^_^
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2015-10-27T20:06:20+05:30
(y+z)² = (y²+z²+2yz)
(4y²+49z)² = (4y²)² + 49z +2(28yz)

Answer
i hope u like this
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