Q=2x2y2z−6xy2+11xyz−3xy+10x+4x2y2z+7xy2−15xyz+7xy−12x+5. minh can gấp mong các bn giúp đỡ !! 11/08/2021 Bởi Madeline Q=2x2y2z−6xy2+11xyz−3xy+10x+4x2y2z+7xy2−15xyz+7xy−12x+5. minh can gấp mong các bn giúp đỡ !!
Đáp án: `Q = 2x^2y^2z – 6xy^2 + 11xyz – 3xy + 10x + 4x^2y^2z + 7xy^2 – 15xyz + 7xy – 12x + 5` `-> Q = (2x^2y^2z + 4x^2y^2z) + (-6xy^2 + 7xy^2) + (11xyz – 15xyz) + (-3xy + 7xy) + (10x – 12x) + 5` `-> Q = 6x^2y^2z + xy^2 – 4xyz + 4xy – 2x + 5` Bình luận
`Q=2x^2y^2z−6xy^2+11xyz−3xy+10x+4x^2y^2z+7xy^2−15xyz+7xy−12x+5` `= 2x^2y^2z + 4x^2y^2z −6xy^2 +7xy^2 +11xyz−15xyz−3xy+7xy+10x−12x+5` `= (2+4)x^2y^2z + (-6 + 7)xy^2 + (11 – 15)xyz + (-3 +7)xy + (10 – 12)x + 5` `= 6x^2y^2z + xy^2 -4xyz + 4xy -2x + 5` Bình luận
Đáp án:
`Q = 2x^2y^2z – 6xy^2 + 11xyz – 3xy + 10x + 4x^2y^2z + 7xy^2 – 15xyz + 7xy – 12x + 5`
`-> Q = (2x^2y^2z + 4x^2y^2z) + (-6xy^2 + 7xy^2) + (11xyz – 15xyz) + (-3xy + 7xy) + (10x – 12x) + 5`
`-> Q = 6x^2y^2z + xy^2 – 4xyz + 4xy – 2x + 5`
`Q=2x^2y^2z−6xy^2+11xyz−3xy+10x+4x^2y^2z+7xy^2−15xyz+7xy−12x+5`
`= 2x^2y^2z + 4x^2y^2z −6xy^2 +7xy^2 +11xyz−15xyz−3xy+7xy+10x−12x+5`
`= (2+4)x^2y^2z + (-6 + 7)xy^2 + (11 – 15)xyz + (-3 +7)xy + (10 – 12)x + 5`
`= 6x^2y^2z + xy^2 -4xyz + 4xy -2x + 5`