Which expression is equivalent to 2cos2(x/2)-cos(x)
1 answer:
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Solve by substitution
Just plug in y=-x-1 into y+x=3
So we get:
Simplify that:
And since that is not true, that means this system of equations has no solutions!
Just plug in y=-x-1 into y+x=3
So we get:
Simplify that:
And since that is not true, that means this system of equations has no solutions!
Answer:
Step-by-step explanation:
hello : here is an solution
