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Tomtit [17]
3 years ago
12

X²+2xy+y²=144, (x+y)³?​

Mathematics
2 answers:
Bumek [7]3 years ago
5 0

Answer:

The value of (x + y)³ is 1728.

Step-by-step explanation:

First, you have to find the value of x + y :

x² + 2xy + y² = 144

x² + xy + xy + y² = 144

x(x + y) + y(x + y) = 144

(x + y)(x + y) = 144

(x + y)² = 144

x + y = √144

x + y = 12

Next, the value of (x + y)³ :

(x + y) = 12³ = 1728

Phantasy [73]3 years ago
4 0

Answer:

(x+y)³=1728

Step-by-step explanation:

(x+y)²=144=12²

(x+y)³=12*12*12=1728

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