Question

If 2x+6y =60 and xy= 1 find x2+9y2​

Answer 1

Answer:

the value of x²+9y² is 894.

Step-by-step explanation:

2x+6y=60 & xy=1

Now,

2x+6y=60

(2x+6y)²=(60)²

4x²+36y²+24xy=3600

4{x²+9y²+6(1)}=3600

x²+9y²+6=900

x²+9y²=894

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