if one of the zeroes of 2x2-kx-12 is -4 then find the value of k
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2×(-4)×(-4)-k(-4)-12=0
2×(16)+4k-12=0
32+4k-12=0
20+4k=0
4k= -20
k=-20/4
k= -5
2×(16)+4k-12=0
32+4k-12=0
20+4k=0
4k= -20
k=-20/4
k= -5
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