SSC Delhi Forest Guard 2020 Mock Test Quantitative Aptitude Algebra Polynomials

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

1
6x2y – 8xy2 + 15y2z
2
6x2y + 8xy2 – 15y2z
3
6x2y + 8xy2 – 15y2z – 20xyz
4
6x2 – 8xy2 + 15y2z + 20xyz
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