Question

if x =- 2 and X square + Y square + 3xy =- 5 ,then find y​

Answer 1

Answer:

y=3

i

hope

it may help you

Answer 2

Answer:

3

Step-by-step explanation:

putting value of x:-

(-2) sq. + y sq. +3(-2)(y) = -5

4+y sq. -6y= -5

y sq. - 6y = -5-4

y sq. - 6y = -9

y sq. -6y +9 = 0

(by factorisation)

y sq. -( 3y + 3y) +9= 0

y sq. -3y -3y +9 = 0

(taking common)

y(y-3) -3 ( y -3) = 0

(y-3)(y-3) =0

hence,

y -3= 0

y=3