Answer:
See Explanation
Step-by-step explanation:
Given
Required
Why dividing by is not reliable
The reason is that, the given expression is a quadratic equation and as such, it will most likely have two solutions.
So, when the expression is divided by , the solution will be , leaving out the other possible solution.
The right way is:
Subtract 6x from both sides
Factorize
Split
Solve for x in both cases:
Answer:
Step-by-step explanation:
(8-2)*180=1080 degrees
114+66+94+259+94+67+254+97+x=1080
1045+x=1080
1080-1045=x
x=35
All you need to do is plug in 3 wherever you see an x!
y = 3(3) - 2(3)^2 + 5(3)^3
y = 9 - 2(9) + 5(27)
y = 9 - 18 + 135
y = -9 + 135
y = 126
Hope this helps!