Simplify the expression: 1/1+cot^2x
a. sec^2x
b. csc^2x
c. sin^2x
d. cos^2x
e. tan^2x

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1