exam Maths Puzzle Numerical Ability

P(x)=x^2-3xy+y^2
r=-5x^2+2xy-3y^2

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exam Other Question

Please help me combine like terms with following equation. This is all ONE equation. :

1(3x^2)^4(-1/2square root of y)^0+4(3x^2)^3(-1/2square root of y)^1+6(3x^2)^2(-1/2square r Could you please help me with the following. The directions read: Find four solutions for each equation.
y=8
x=-1

2. Graph each equation by plotting ordered pairs
x=2
y= -3