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labwork [276]
3 years ago
5

A = − 5 ; b = 7 ; c = 1 − 2 a + 4 b − c 2=

Mathematics
1 answer:
lawyer [7]3 years ago
8 0
Answer:13

Step by step solution: see photo
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9

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4x9=36

5x9=45

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7x9=63

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3 years ago
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6xy (x 2 - xy + y 2 )
Liono4ka [1.6K]

(if 2 is a square)

6xy ( x2 - xy + y2)

= 6x3y - 6x2y2 - 6xy3 --------------the threes and twos on this line are squares and cubics. the six is just a whole number


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4 years ago
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OlgaM077 [116]

Answer: c=5.4

The two roots are 3/5 and 9/5


Step-by-step explanation:

assume 5x2−12x c=0 is supposed to be 5x^2 - 12x + c = 0

p = (12 + sqrt(144-20c))/10

q = (12 - sqrt(144-20c))/10

p-3q=0,

1.2 + 0.1sqrt(144-20c) +

-3.6 + 0.3sqrt(144-20c) = 0

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sqrt(144-20c) = 2.4/0.4 = 6

144-20c=36

144-36=20c

c = 108/20 = 5.4

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3 years ago
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