Math, asked by ariyhantgupta2008, 1 month ago

if 5x -4y is equal to 15 and xy is equal to 3 find 25xsquare + 16ysquare

Answers

Answered by bagkakali

0

Answer:

5x-4y=15

xy=3

25x^2+16y^2

=(5x)^2+(4y)^2

=(5x-4y)^2+2.5x.4y

=(15)^2+40xy

=225+40×3

=225+120

=345

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