(5x+4y)2-(5x-4y) 2=4kxy.find the value of k
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Answered by
2
Step-by-step explanation:
(5x+4y)2 - (5x-4y)2= 4kxy
10x + 8y - 10x +8y = 4kxy
16y =4kxy
k= 16y/4xy
k= 4/x
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Answered by
2
Step-by-step explanation:
(5x+4y)2 - (5x-4y)2 = 4kxy
2(5x+4y-5x+4y) = 4kxy
2(8y) = 4kxy
16y = 4kxy
16 = 4kx
kx = 4
k = 4/x
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