Simplify the expression by combining the terms, write the terms from highest to the lowest power of the variable -9a^2-17a^2-8-12a^2-17-9a+7a

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

What is the binomial expansion of (2x-3)^5

Describe the relationship between the angles of similar triangles and the sides of similar triangles