Question

Keep in mind: This is a study of the binomial theorem. The question is;

Without actually writing the formula, explain how to expand (x + 3)7 using the binomial theorem.

Answer 1

To write the coefficients of the 8 terms, either start with a combination of 7 things taken 0 at a time and continue to 7 things taken 7 at a time or use the 7th row of Pascal’s triangle. For the first term, write x to the 7th power and 3 to the 0 power. Then decrease the power on x and increase the power on y until you reach x to the 0 and y to the 7. Simplify by evaluating the coefficients and powers of 3.

Answer on edgeunity

Answer 2

draw pascals triangle to get coefficients.