Find the least common denominator for these two rational expressions x/x^2-4 2x/x^2-8x+12

Given the statements, "a square root of 16 is 4," and "a square root of 9 is -3," complete the following blanks with the correct truth-values. p is and q is , so the statement, "a square root of 16 is 4 or a square root of 9 is -3" is .

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?