It's basicly adding and subtracting hope this helps
Answer:
Simplify: ![(\sin(x) -\cos(x))^2](https://tex.z-dn.net/?f=%28%5Csin%28x%29%20-%5Ccos%28x%29%29%5E2)
Use identity rule:
![(a-b)^2 = a^2+b^2-2ab](https://tex.z-dn.net/?f=%28a-b%29%5E2%20%3D%20a%5E2%2Bb%5E2-2ab)
Using this rule:
![\sin^2(x)+\cos^2(x)-2\sin(x)\cos(x)](https://tex.z-dn.net/?f=%5Csin%5E2%28x%29%2B%5Ccos%5E2%28x%29-2%5Csin%28x%29%5Ccos%28x%29)
Using trigonometric identities rules:
then;
Apply the trigonometric identity rule:
![1-2\sin(x)\cos(x)](https://tex.z-dn.net/?f=1-2%5Csin%28x%29%5Ccos%28x%29)
or
![1-\sin 2(x)](https://tex.z-dn.net/?f=1-%5Csin%202%28x%29)
Therefore, the simplified form of
is ![1-\sin 2(x)](https://tex.z-dn.net/?f=1-%5Csin%202%28x%29)
So you would do 5*2x +5*-8 +15=-15
Then simplify so it would be 10x + -40 + 15 = -15
Then add -40 and 15 together
Then it would be 10x + -25 = -15
Then add 25 to -25 and -15
So it would be 10x = 10
And then divide 10 from 10 with would be 1 so x = 1
Answer:
C. 49
Step-by-step explanation:
Start by filling in your values.
![7^{2} + 99 / 11 - 9](https://tex.z-dn.net/?f=7%5E%7B2%7D%20%2B%2099%20%2F%2011%20-%209)
Solve using PEMDAS.
49 + 99 / 11 - 9
49 + 9 - 9
58 - 9
49
Answer:
y=-24
Step-by-step explanation: