Under root 2x^2 +7x+5 under root 2 =0
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√2X^2 + 7X + 5√2 = 0
√2X^2 + 5X + 2X + 5√2 = 0
X(√2X+ 5)+ √2(√2X + 5) = 0
(√2X + 5) (X + √2) = 0
(√2X + 5) = 0 | (X + √2) = 0
X = -5/√2 | X = -√2
√2X^2 + 5X + 2X + 5√2 = 0
X(√2X+ 5)+ √2(√2X + 5) = 0
(√2X + 5) (X + √2) = 0
(√2X + 5) = 0 | (X + √2) = 0
X = -5/√2 | X = -√2
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