-24
-66+42
=-24 since it is negative
Answer:
![33\sqrt{2} +12](https://tex.z-dn.net/?f=33%5Csqrt%7B2%7D%20%2B12)
Step-by-step explanation:
![(3\sqrt{2} - 12)(2\sqrt{2} + 1)](https://tex.z-dn.net/?f=%283%5Csqrt%7B2%7D%20%20-%2012%29%282%5Csqrt%7B2%7D%20%2B%201%29)
![6\sqrt{2} + 3\sqrt{2} -12(2\sqrt{2})+12](https://tex.z-dn.net/?f=6%5Csqrt%7B2%7D%20%20%2B%203%5Csqrt%7B2%7D%20-12%282%5Csqrt%7B2%7D%29%2B12)
![9\sqrt{2}+24\sqrt{2}+12](https://tex.z-dn.net/?f=9%5Csqrt%7B2%7D%2B24%5Csqrt%7B2%7D%2B12)
![33\sqrt{2} +12](https://tex.z-dn.net/?f=33%5Csqrt%7B2%7D%20%2B12)
Answer:
The roots are 0, 3 and 4.
Step-by-step explanation:
x^3-7x^2-12x = 0 Take out x:
x(x^2 - 7x - 12) = 0 Factor the expression in the brackets:
x(x - 3)(x - 4) = 0
x = 0 or x - 3 = 0 or x - 4 = 0, so
The roots are 0, 3 and 4.
Answer: ![\frac{2A}{h} = w](https://tex.z-dn.net/?f=%5Cfrac%7B2A%7D%7Bh%7D%20%3D%20w)
Step-by-step explanation:
The formula for area of a triangle is ![A = wh\frac{1}{2}](https://tex.z-dn.net/?f=A%20%3D%20wh%5Cfrac%7B1%7D%7B2%7D)
Now we have to isolate for w.
First multiply by the 2 which is the reciprocal of 1/2 to cancel it out.
![2A = wh\\](https://tex.z-dn.net/?f=2A%20%3D%20wh%5C%5C)
Now divide by h to isolate w.