HELP, WILL GIVE 100 POINTS Which sum or product is rational? Choose all that apply.
A.
−12+3
B.
(7–√)(34)
C.
2.7 + 45
D.
(78)(9–√)
E.
4 + 5–√

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

What is the total area of the figure?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.