Answer:
x
4
Step-by-step explanation:
9x/2
6(x - 3) + 3x
9x/2
6x - 18 + 3x
9x/2
9x - 18
mltiply both sides by 2
9x
18x - 36
subtract 18x from both sides
-9x
-36
divide both sides by -9
flip the side when dividing by a negative
x
4
You can tell when a number is rational because it can be represented as a fraction. Yes it is a rational number.
Answer: =x2+7x+5
Step-by-step explanation:
−3x2+2x−4+4x2+5x+9
=−3x2+2x+−4+4x2+5x+9
Combine Like Terms:
=−3x2+2x+−4+4x2+5x+9
=(−3x2+4x2)+(2x+5x)+(−4+9)
=x2+7x+5
Answer:
=x2+7x+5