Is the sum of two real numbers always a rational number.

If so explain why

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x