shololarukayat shololarukayat

26-05-2020
Mathematics

contestada

find the value of which will make the quadratic expression 9y²-12y+k is a perfect square
a) 5
b) -4
c) 4
d) 9

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Yasaswipyakurel4 Yasaswipyakurel4

26-05-2020

Answer:The value of k must be[c] to make this quadratic equation a perfect square.

Step-by-step explanation:

I don't say you have to mark my ans as brainliest but my friend if it has really helped you plz don't forget to thank me....

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lucasella lucasella

26-05-2020

Answer:

c)4

Step-by-step explanation:

9y²-12y+k

(3y)²-2*3*2*y+2²=(3y-2)²

k=2²=4

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