One zero of the quadratic poly 2x2 -8x - k is 5/2 find other zero and value of k
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given quadratic polynomial is ......
2x²-8x-k
given one of the zero is 5/2
2(5/2)²-8(5/2)-k=0
25/2-40/2-k=0
25-40-2k=0
-15-2k=0
k=-15/2
2x²-8x-k
2x²-8x+(15/2)
4x²-16x+15
4x²-10x-6x+15
2x(2x-5) -3(2x-5)
another zeroes are x=3/2
x=5/2
I HOPE THIS WILL HELP U
2x²-8x-k
given one of the zero is 5/2
2(5/2)²-8(5/2)-k=0
25/2-40/2-k=0
25-40-2k=0
-15-2k=0
k=-15/2
2x²-8x-k
2x²-8x+(15/2)
4x²-16x+15
4x²-10x-6x+15
2x(2x-5) -3(2x-5)
another zeroes are x=3/2
x=5/2
I HOPE THIS WILL HELP U
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