Without simplifying, select all the expressions that will represent a rational number. A.4/23+3/√9
B.4/23−4/√8
C.4/23×3/√9
D.4/23÷4/√8
E.4/23×8/√3
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Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

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