Question

find the value of 2x2y+2xy2+xy+1,if x=-1 and y=-2
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Answer 1

Step-by-step explanation:

x= -1 y= -2

2x^2y+2xy^2+xy+1

=2×(-1)^2×(-2)+2×(-1)×(-2)^2+(-1)×(-2)+1

=2×1×(-2)+2×(-1)×4+2+1

= -4+(-8)+2+1

= -4-8+2+1

= -9

Answer 2

$\huge\underline\bold\pink{Answer}$

$x = - 1 \\ y = - 2$

$2 {x}^{2} y + 2x {y}^{2} + xy + 1 \\ \\ 2 {( - 1)}^{2} ( - 2) + 2( - 1)( { - 2)}^{2} \\ + ( - 1)(- 2) + 1 \\ \\ 2(1)( - 2) - 2(4) + 2 + 1 \\ - 4 - 8 + 3 \\ - 9$