Find the zeroes of the quadratic polynomial x2 + 3x - 4.
0
1 and 4
0
-4 and 1
0
-1 and 4
0
-4 and - 1
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x²+3x-4=0
=x²+4x-x-4=0
=x(x+4)-1(x+4)=0
x=1 or x=-4
hope it helps
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