all real numbers except the 90 and 270 because of cosx
Answer:
-113 and 113
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
Answer:
![7+\sqrt{x+3}](https://tex.z-dn.net/?f=7%2B%5Csqrt%7Bx%2B3%7D)
Step-by-step explanation:
The conjugate of a radical expression is obtained by changing the sign of the middle term.
The conjugate of
is simply ![a-\sqrt{b}](https://tex.z-dn.net/?f=a-%5Csqrt%7Bb%7D)
Therefore, to obtain the conjugate of the given expression we simply shall be changing the negative sign to positive;
The conjugate of
is simply;
![7+\sqrt{x+3}](https://tex.z-dn.net/?f=7%2B%5Csqrt%7Bx%2B3%7D)
Answer:
4 and 2
Step-by-step explanation:
4x4+2x2
16+4=20