Show, by using simultaneous equations, that the line y = 5x - 3 is a tangent to the curve y = x + x + 1

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).