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y2 + y2 - 56 let's factor it such as

= 2y2 - 56

= 2(y2 - 28)

= 2[y2 - (√28)2]

= 2(y - √28)(y + √28)

= 2(y - √4*7)(y + √4*7)

= 2(y - 2√7)(y + 2√7)

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Q: Y squared plus y squared - 56 equals?
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