I can tell you about the 'ac' method of factoring trinomials by way of an example:-
Factor 3x^2 - 4x - 15
first multiply the first number by the last That is 3 * -15 = -45
Now we need to find 2 factors of -45 which will when added give - 4 ( the coefficient of x)
-9 and = 5 look like the ones so we write
3x^2 - 9x + 5x - 15
Now factor this by grouping:-
= 3x(x - 3) + 5(x - 3)
x - 3 is common to the 2 parts so we have:-
(3x + 5)(x - 3) <-------- These are your factors
Any trinomial can be factored in this way.
Answer:
The length of the other piece is 38 inch.
Step-by-step explanation:
Given:
A 190 inch pipe is cut into 2 pieces. One piece is 4 times the length of the other.
Now, to find the length of the other piece.
Let the length of the other piece be 
.
And the length of one piece be 
.
The total length of the pipe = 
According to question:
⇒
<em>Dividing both sides by 5 we get:</em>
⇒
Therefore, the length of the other piece is 38 inch.
Answer:
3/4
Step-by-step explanation:
1+3x=-x+4
1+3x-(-x)=4
1+3x+x=4
1+4x=4
4x=4-1
4x=3
x=3/4
Answer:
y=1
Step-by-step explanation:
If the slope of a line is 0, then the line is horizontal.
From there, all you have to do is find y.
This is easy because all you have to do is write down the y-coordinate that's listed.
So, the equation would be y=0x+1 which is y=1.
