a) Expand by using suitable identity (2x + 3y - z)2
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Answer:
(2x + 3y - z ) ^2
(2x)^2 + (3y)^2 + (-z)^2 + 2xy+ 2 yz + 2zy
2x^2 + 3y^2 +z^2 + 2xy - 2yz - 2zy
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Answer:
c=z and b=3y
Step-by-step explanation:
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