x²+x-20=0 Solve this quadratic equation by factorisation.
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Answered by
224
Hi ,
x² + x - 20 = 0
splitting the middle term ,
x² + 5x - 4x - 20 = 0
x( x + 5 ) - 4( x + 5 ) = 0
( x + 5 )( x - 4 ) = 0
x + 5 = 0 or x - 4 = 0
x = -5 or x = 4
Therefore ,
Roots of given quadratic equation are -5 , 4
I hope this helps you.
: )
x² + x - 20 = 0
splitting the middle term ,
x² + 5x - 4x - 20 = 0
x( x + 5 ) - 4( x + 5 ) = 0
( x + 5 )( x - 4 ) = 0
x + 5 = 0 or x - 4 = 0
x = -5 or x = 4
Therefore ,
Roots of given quadratic equation are -5 , 4
I hope this helps you.
: )
Answered by
7
Step-by-step explanation:
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