Answer:
x^2 - 4x - 12
Step-by-step explanation:
(x-6)(x+2) = x(x+2) - 6(x+2) = x^2+2x-6x-12 = x^2 - 4x - 12
i hope it helps
For Y=2x+10 X=y/2 -5. Second x/3
Given:
(3x^4 - 2 + 8x^3 ) + (7x^3 - 6 + 7x^4 )
Add like terms together ( same variables and exponents )
3x^4 + 7x^4 +8x^3 + 7x^3 -2 - 6
10x^4 + 15x^3 - 8
Answer :
10x^4 + 15x^3 - 8
Answer:
For number 9)
Interval notation ![(-\infty,3]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C3%5D)
For number 10)
Interval notation:
.
Step-by-step explanation:
On square roots you have to make sure the inside is positive or zero.
So the domain of the first one will come from solving

Subtract 6 on both sides:

Divide both sides by -2 (flip inequality when divide both sides by negative):

The domain is less than or equal to 3.
Interval notation ![(-\infty,3]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C3%5D)
On fractions you have to watch out for dividing by 0.
The domain is all real numbers except when 4x+2=0.
4x+2=0
Subtract 2 on both sides:
4x=-2
Divide both sides by 4:
x=-2/4
Reduce:
x=-1/2
The domain is all real numbers except when x=-1/2
Interval notation:
.
Answer:
22)

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∴To calculate the perimeter , add the length of its sides.
∴To calculate the area, multiply its height by its width.
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hope it helps...
have a great day!!