Question

the roots of the equation x² + 7x + 10 = 0​

Answer 1

Answer:

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Answer 2

x²+ (5x+2x) + 10 = 0

or, x² + 5x + 2x + 10 = 0

or, x ( x + 5) + 2 ( x + 5 ) = 0

or, ( x + 5) ( x + 2) = 0

now,

either x + 5 = 0

or, x = -5 ( 1st root)

or, x + 2 = 0

x = -2 ( 2nd root)