ANSWER: 3x^2 + 6
4x^2 + 1 - (x^2 - 5) = 3x^2 + 6
The greatest common factor of 28 and 72<span>, is </span><span>4</span>
Answer:
Simpify each expression :
1) B
2)B
3)C
4)A
5)A
6)C
Find each product, and simplify the expression :
7)B
8)A
9)A
Step-by-step explanation:
I will send the explanation in a little time.
Answer:
40° or 2π/9 rad
Step-by-step explanation:
Let f(x) = 0 and solve
2cos (3x) + 1 = 0
2cos (3x) = -1
cos (3x) = -1/2
3x = arccos (-1/2) = 120
x = 40° or 2π/9 rad
Answer:Number four
Step-by-step explanation: Because 88 canot be lowered neither can 19 and 28/9 = 3 1/9