Which expressions can be factored using the difference of squares identity? 6x^2-81

4a^2-64b^5

32y*2-8^2

49x-x^4

x^4 – 400

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m