Math, asked by kartikbhoriya4427, 9 months ago

3x-7y =10 and xy= -1 Show that 9x ^2+ 49y^2

Answers

Answered by ms8120584

0

9x²+49y²=(3x-7y)² + 2xy

= 10²+ 2(-1)

=100-2

=98

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