if 9X2 +25y2 = 181 and xy = - 6 , find the value of 3x + 5y - Maths -

Question

if 9X2 +25y2 = 181 and xy = - 6 , find the
value of 3x + 5y

Subhash Dayal · Accepted Answer

(3x+5y)2=9x2+
25y2+2(3x)(5y)
(3x+5y)2=181 -180
3x+5y=root1
3x+5y=-1 or 1
plz thmbs up

if 9X2 +25y2 = 181 and xy = - 6 , find the value of 3x + 5y.