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  • 22-10-2020
  • Mathematics
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Solve the quadratic by factorizing x2+ 2x-8

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  • 22-10-2020

Answer:

x = -4 & +2

Step-by-step explanation:

equation: x^2 + 2x -8 = 0

=> x^2 + 4x - 2x -8 = 0 -----(*4x-2x= 2x)

=> x(x + 4) -2( x + 4) = 0 ----(taking out the common factor)

=> ( x + 4) ( x - 2 ) = 0

Case I

=> ( x + 4 ) = 0

=> x = -4

Case II

=> ( x - 2 ) = 0

=> x = 2

Therefore, x = -4 and +2

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