Find the value of discriminant. V2 x² + 4x + 2v2 = 0
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comparing this eq with standard form of quadratic equation ax²+bx+c=0
a= √2 , b= 4 , c= 2√2
Discriminant D = b²-4ac
= 4²-4×√2 ×2√2 = 16- 16 =0
hence it have real and equal roots
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