Answer:

Step-by-step explanation:
I assume your equation to solve is

When we have a product of two factors equal to zero,

The solution is either A = 0 or B = 0.
In this case, this means that we can break the equation into two equations:

Solving the first one, we get:

For the second one, we rewrite it as:

And we see that this equation has two solutions:

Therefore, the three solutions are:

Answer:
X=20
Y=70
Step-by-step explanation:
All angles within a triangle add up to 180
180 - 40 = 140
140 is the top angle of the big triangle
140 + x + x = 180
x = 20
Now use x to find y by subtracting from the right angle (90 degrees)
90 - 20 = 70
70 + 40 + y = 180
Y = 70
Answer: it is <CAB
Step-by-step explanation: i just took a test on ed and passed with a 100%
Answer: 18x^3-9x^2+21x
Solution:
3x(6x^2-3x+7)=
Applying the distributive property in the multiplication to eliminate the parentheses:
(3x)(6x^2)+(3x)(-3x)+(3x)(7)=
(3*6)x^(1+2)+3*(-3)x^(1+1)+(3*7)x=
18x^3-9x^2+21x