4) J = 4X² +12XY +9Y² - (4X² + 9Y²)
J =4X² +12XY +9Y² - 4X² - 9Y²
J = 12XY
5) G =5 +2 √ 10 + 2 + 5 - 2 √ 10 +2
G = 14
6) X² +6X +9 - (X² +4X +4) +X² +8X +16 - (X² +10X +25)
X² +6X +9 - X² - 4X - 4 +X² +8X +16 - X² - 10X -25
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4) J = 4X² +12XY +9Y² - (4X² + 9Y²)
J =4X² +12XY +9Y² - 4X² - 9Y²
J = 12XY
5) G =5 +2 √ 10 + 2 + 5 - 2 √ 10 +2
G = 14
6) X² +6X +9 - (X² +4X +4) +X² +8X +16 - (X² +10X +25)
X² +6X +9 - X² - 4X - 4 +X² +8X +16 - X² - 10X -25
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