Question

5xy(3x+4y-7) -3y(xy-x²+9) -8 for x = 2,y= -1​

Answer 1

Answer:

Given, x=2, y=-1

Step-by-step explanation:

Now substitute the values of x,y in the equation: 5xy(3x+4y-7)-3y(xy-$x^{2}$+9)-8

Now,

5(2)(-1)[3(2)+4(-1)-7)]-3(-1)[(2)(-1)-(4)+9]-8

=-10[6-4-7]+3[-2-4+9]-8

=-10[-5]+3[3]-8

=50+9-8

=59-8

=51

Therefore, by substituting the values of x,y in the equation 5xy(3x+4y-7)-3y(xy-$x^{2}$+9)-8 we get answer 51.

HOPE THE ANSWER WOULD I HELP YOU.

Answer 2

$5xy(3x+4y-7) -3y(xy-x²+9) -8 \\ 5 \times 2 \times ( - 1)(3 \times 2 + 4 \times ( - 1) - 7) - 3 \times ( - 1)(2 \times ( - 1) - {2}^{2} + 9)-8 \\ - 10(6 - 4 - 7) + 3( - 2 - 4 + 9)-8 \\ - 60 + 40 +7 0 - 6 - 12 + 27-8 \\ 51.$

hope it helps !!

thnku✌❤✌