What is the value of A when we rewrite (1/8)^x + (1/8)^x-2 as A x (1/8)^x

Simplify the expression 10/11(22z) + (a+5) -1

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.