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qaws [65]
3 years ago
5

Find the value of which will make the quadratic expression 9y²-12y+k is a perfect square

Mathematics
2 answers:
Irina18 [472]3 years ago
8 0

Answer:

c)4

Step-by-step explanation:

9y²-12y+k

(3y)²-2*3*2*y+2²=(3y-2)²

k=2²=4

KATRIN_1 [288]3 years ago
3 0

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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andreyandreev [35.5K]

Answer:

8

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3 0
3 years ago
8. (01.02)
aniked [119]

Answer:

51.

Step-by-step explanation:

f(x) = x^2 + 2x + 3 and g(x) = x + 4.

f(g(x)) = (x + 4)^2 + 2(x + 4) + 3

= x^2 + 4x + 4x + 16 + 2x + 8 + 3

= x^2 + 8x + 16 + 2x + 11

= x^2 + 10x + 27.

x = 2.

f(g(2)) = 2^2 + 10 * 2 + 27

= 4 + 20 + 27

= 31 + 20

= 51.

Hope this helps!

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