Question

if 3x-4y=10 and xy= -1, find the the value of (9x*9x)+(16y*16y)

Answer 1

Answer:

3x-4y=10

3x=10+4y

x=10+4y

3

xy=-1

=(9x*9x)+(16y*16y)

=(81x²)+(256y²)

=(9x+16y)²

=(81x²+256y²+144xy)

=(81x²+256y²+144(-1))

=(81x²+256y²-144)

81x²+256y²=144

hope ita helpful