5) What is the number of terms in the polynomial
(2a − 5)(a^2 − 1)?

An equation is shown below: 3(4x − 2) = 1 which of the following correctly shows the first two steps to solve this equation?

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

What is the length of the unknown leg in the right triangle ?