full solution plz----
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I have done this sum by factorisation method.
If you have any doubts, ask them in the comments section below.
If you have any doubts, ask them in the comments section below.
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x²+x-20=0
x²+5x-4x-20=0
x(x+5)-4(x+5)=0
x=-5and x=4
x²+5x-4x-20=0
x(x+5)-4(x+5)=0
x=-5and x=4
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