-8+(-21) = -29
-6 + -7 + -8 = -21
5
21
17 plus 8 is 25, and the square root of 25 is 5. Alternatively, the square root of 17 is about 4.123; adding 8 to that gives about 12.123.
Root 64 is 8, if by root you mean the square root. Then the problem become -square root 84(6+8) which is the - square root of 84(14) But square root of 84 is 2(square root of 21) so the final answer comes from -2(square root 21)x14 which is -28square root (21)
if you mean X²+8X-5=0: X1=-8/2 - Square root of ((8/2)²+5) X1=-4 - Square root of 21 X1 is about -8.58 X2=-8/2 + Square root of ((8/2)²+5) X2=-4 + Square root of 21 X2 is about 0.58
21
-8+(-21) = -29
3 + 8 + 21 + 22 + 36 = 90 Ans.// What do you mean?
plus or minus 21
-21
8 plus 7 is 15. 15 plus 6 is 21. :)
It is: -21
3/7 + 8/21 = 9/21 + 8/21 = 17/21
68
4.7916427e+21