Question

solve x²+2√5x+5=0 by using formula​

Answer 1

Answer:

Step-by-step explanation:

x²+2√5x+5=0

x²+2√5x+(√5)²= 0

(x+√5)²= 0

x+√5 = 0

X = -√5

Answer 2

Step-by-step explanation:

${x}^{2} + 2 \sqrt{5} x + 5 = 0 \\ \\ {x}^{2} + \sqrt{5} x + \sqrt{5} x + 5 = 0 \\ \\ x(x + \sqrt{5} ) + \sqrt{5} ( x + \sqrt{5} ) = 0 \\ \\ (x + \sqrt{5} )(x + \sqrt{5} ) = 0 \\ \\ x = ± \sqrt{5}$

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