Question

Find the value of the given expressions if 'x=-1, y=-2' 3x^3-2x^2y+3xy^2-5​

Answer 1

Step-by-step explanation:

$x = - 1 \: \: \: y = - 2 \\ 3 {x}^{3} - 2 {x}^{2} y + 3x {y}^{2} - 5 \\ = 3( { - 1)}^{3} - 2( { - 1)}^{2} ( - 2) + 3( - 1)( { - 2)}^{2} + 5 \\ = - 3 + 4 - 12 - 5 \\ = - 20 + 4 \\ = - 16$

Hope you get your answer