Question

Expand (-2x +5y -3y)² using suitable identities

Answer 1

Step-by-step explanation:

$( - 2x) ^{2} + (5y) {}^{2} + ( - 3y) {}^{2} + 2( - 2x)(5y) + 2(5y)( - 3y) + 2( - 3y)( - 2x)$

$= 4x { }^{2} + 25y {}^{2} + 9y {}^{2} - 20xy - 30y {}^{2} + 12xy$

Answer 2

Step-by-step explanation:

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