You can choose to expand the equation to find the coefficient of x7 but that would take a lot of time. Here is a useful tactic that can help;
11C(something)(1)(x)⁷ ----> This gives the coefficient of x⁷
11C7(1)⁴(x)⁷ ----> You know that pascal's triangle is equal on both sides
11C7×1⁴ = coefficient of x⁷ (just ignore x⁷)
330x1⁴=330
This means that the coefficient of x⁷ is 330. You can double check by expanding the equation. If you do not understand what I did there, you can ask me how I got to the solution.
Hope I helped :)
Answer:
21,337.85 8,589 e
takethe 6,139 6,139 nawa og 8,589
Toy 1.40495_ear to 02 Yang es 2.48432 e
es Inc4oua5 Ince r 2 incz484323 lnceo.at
Step-by-step explanation:
Answer:
Step-by-step explanation:Given:
Two points (-10,-7),(-5,-9).
To Find:
Equation of line through these points?
Step-by-step explanation:
We know equation of line through is given by
Put the value in equation we get
Hence, equation of line is 5y+2x=-55.
Answer:
x=2; the extraneous root x=42.
All the details are in the attached picture, the answer is marked with red colour.
