Question

Find the real roots : x2 +5V5x - 70=0​

Answer 1

Answer:

x² + 5√5x - 70 = 0

x² + 7√5x - 2√5x - 70 = 0

x ( x + 7√5) - 2√5 ( x + 7√5) = 0

( x + 7√5) ( x - 2√5 ) = 0

( x + 7√5) = 0,

( x - 2√5 ) = 0

x = -7√5, 2√5

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