Answer:
Write the repested multiplication in exponential form then the only way an exponentiation can be 0 is when the base equals 0 then move the constant to the right-hand side and change its sign then your answer is x=-8
Step-by-step explanation:
Answer:

Step-by-step explanation:
Using foil method, Multiply the first term

Next, Multiply the Outer term in each parenthesis. (2x^2 and 7


Then, Multiply the Inner Terms (-3x,-4,7) in each parenthesis


Then multiply the last term (-4 and 7).

Combine it you have

which simplify to

Answer:
1
Step-by-step explanation:

Step-by-step explanation:
perimeter of triangle = sum of all sides