find K , if -5is a zero of 3xsquare +8x -k
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Answer:
given, quadratic equation is ,
3x² + 8x - k = 0
since,
-5 is a zero os this equation so,
3( -5)² + 8(-5) - k = 0
=> 3*25 -40 - k = 0
=> 75 - 40 = k
=> 35 = k
or , k = 35.
so, the value of k is 35.