Question

simplify and find value at X = 1 y =-1 3x power 2 + 5 x (X - 3y ) + 3 x y

Answer 1

Hello,
we have that:
3x²+5×(x-3y)+3xy;
3x²+5x-15y+3xy;

for x=1 and y=-1,we get:
3(1²)+5(1)-15(-1)+3(1)(-1);
=3+5+15-3;
=20

bye :-)

Answer 2

Hello...

Question >>. Simplify and find value at x = 1 and y = -1 in 3x²+5×(x-3y)+3xy

>> 3x²+5×(x-3y)+3xy

Put the given values x = 1 and y = -1

3(1²)+5(1)-15(-1)+3(1)(-1)

=3+5+15-3

=20 Answer