Home
Class 14
MATHS
If 3x-7y=10\ and x y=-1, find the value...

If `3x-7y=10\ ` and `x y=-1,` find the value of `9x^2+49 y^2`

A

58

B

142

C

104

D

-104

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

If 3x-7y=10 and xy=-1, find the value of 9x^(2)+49y^(2)

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)

If 3x+2y=10 and 2x+3y=15 , find the value of x+y .

If 3x+5y=11 and xy=2, find the value of 9x^(2)+25y^(2)

If 3x + 2y = 10 and 2x + 3y = 15, find the value of x + y.

3x+y=19 and x+3y=1 then find the value of 2x+2y

If 3x+5y =9 and 5x+3y=7, then find the value of x+y.