Math, asked by Megha456, 11 months ago

Expand (-3x + 5y - 2z)^2

Answers

Answered by nandu6286

Using identity:(x+y+z)^2=x^2+y^2×z^2+2xy+2yz+2zx.

x=-3x, y=5y, z=-2z

=(-3x)^2+(5y)^2+(-2z)^2+2×(-3x)×5y+2×5y×(-2z )+2×(-2z)×(-3x)
=9x^2+25y^2+4z^2-30xy-20xy-12zx.
--hioe its help you--

nandu6286: mark the brainlist answer plz mark

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