Simplify the following:
(i) (x-2y)9–3x)+(x+y)(x-3y)–(y–3x)(4x–5y)
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Answer:
(x-2y)(9-3x) + (x+y)(x-3y) -(y-3x)(4x-5y)
=9x-3x^2-18y+6xy+x^2-3xy+xy-3y^2-4xy-5y^2-12x^2+15xy
=9x-3x^2+x^2-12x^2-18y+6xy-3xy+xy-4xy+15xy-3y^2-5y^2
=9x-14x^2-18y^2+15xy-8y^2
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Answered by
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Answer:(x-2y)(9-3x) + (x+y)(x-3y) -(y-3x)(4x-5y)
=9x-3x^2-18y+6xy+x^2-3xy+xy-3y^2-4xy-5y^2-12x^2+15xy
=9x-3x^2+x^2-12x^2-18y+6xy-3xy+xy-4xy+15xy-3y^2-5y^2
=9x-14x^2-18y^2+15xy-8y^2
HOPE IT IS HELPFUL : )
PLEASE MARK IT AS BRAINLIEST
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