Math, asked by ishraqsiddiqui07, 8 months ago

x+y=7 and x*y=21 so the value of x and y

Answers

Answered by naiksai554

2

Answer:

HAPPY TEACHERS DAY♥️♥️♥️♥️

Answered by Anonymous

2

$x + y = 7 \\ y = 7 - x \\ \\ xy = 21 \\ x(7 - x) = 21 \\ 7x - {x}^{2} = 21 \\ - {x}^{2} + 7x - 21 = 0 \\ {x}^{2} - 7x + 21 = 0$

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