<span>6x-(4x-4)=14
</span>
We have to <span>unfold the brackets and change the sign of each term.
</span><span>
</span><span>6x - 4x + 4 = 14
</span><span>
</span><span>2x + 4 = 14 | - 4
</span><span>
</span><span>2x + 4 - 4 = 14 - 4
</span><span>
</span><span>2x = 10 | :2
</span><span>
</span><span>2x:2 = 10:2
</span><span>
</span><span>x = 5
</span><span>
</span><span>
</span><span>Verification : 6*5 -(4*5 - 4) = 14
</span><span>
</span><span> 30 - 20 + 4 = 14
</span><span>
</span><span> 10 + 4 = 14
</span><span>
</span><span> 14 = 14 - true
</span>
Answer:
2020 edge
Step-by-step explanation:
use what u learned
Answer:
My explanation -->
Step-by-step explanation:
Go over to the left on the -4 and up 5 times and mark a dot on it.
Next, go up half a mark from 0 and put a dot there.
Then, go over to the left between the -2 and -4 and go up 5 times.
Lastly, from the 0, go down half way until the next horizontal line and place a dot there.
Answer:
Step-by-step explanation:
a+b+c=0, a+b=-c,a+c=-b, b+c=-a
(a+b+c)^3=(a+b+c)^2*(a+b+c)=(a^2+b^2+c^2+2ab+2ac+2bc)*(a+b+c)=
a^3+ab^2+ac^2+2a^2b+2a^2c+2abc+a^2b+b^3+bc^2+2ab^2+2abc+2b^2c+a^2c+b^2c+c^3+2abc+2ac^2+2bc^2=a^3+b^3+c^3+3a^2b+3a^2c+3ac^2+3ab^2+3bc^2+3b^2c+6abc=
a^3+b^3+c^3+3a^2*(b+c)+3c^2(a+b)+3b^2(a+c)+6abc=
a^3+b^3+c^3+3a^2*(-a)+3c^2*(-c)+3b^2*(-b)+6abc=
a^3+b^3+c^3-3a^3-3c^3-3b^3+6abc=
6abc-2a^3-2b^3-2c^3=2(3abc-a^3-b^3-c^3)=
2*[3abc-(a^3+b^3+c^3)]=0
so 3abc-(a^3+b^3+c^3)=0
so a^3+b^3+c^3=3abc
Dog No dog Total
Cat 31 10 41
No cat 24 7 31
Total 55 17 144
