Multiply (x + 3y + 5) by (2x2 + 5y + 2)
2x2 + 3yx2 + 10xy + 15y2 + 13y + 10x2 + 2x + 10
2x3 + 6yx2 + 5xy + 15y2 + 31y + 10x2 + 2x + 10
2x3 + 6xy2 + 5xy + 15y2 + 12y + 10x2 + 2x + 10
2x2 + 6xy2 + 5xy + 15y2 + 13y + 10x2 + 2x + 10
2x3 + 2yx2 + 10xy + 10y2 + 31y + 5x2 + 10
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Discussions (18)

Here is the correct explanation:
(x+3y+5)(2x^2+5y)
2x^2(x+3y+5)+5y(x+3y+5)
2x^3+6y(x)^2+10x^2+5yx+15y^2+25y

the ans is B cos there is mistake this how the 2x² is meant to be not 2x2 calculate it & see although there is also typical error in the arrangement of the ans in B is meant to be 6x²y not 6yx²

i think the options has a mistake cause according to the explanation, 10x^2 was there but not in the ans
they put 5x^2 instead

The answer is not in the options
cuz when you multiply x by (2x^2+5y+2)it will give you=2x^3+5xy+2x i.e eqn 1
when you multiply 3y by(2x^2+5y+2) it will give you=6x^2y+15y^2+6y) i.e eqn 2
when you multiply 5 by(2x^2+5y+2) it will give you =10x^2+25y+10 i.e eqn3
And when you add the three equations together the ans will be =2x^3+5xy+2x+6x^2y+15y^2+6y+10x^2+25y+10
but since the answer is not in the options,i choose B cuz it relates to the ans

