Question

F(x)=(x+7)^3 expand the function

Answer 1

f(x)=x^3+21x^2+147x+343

Explanation:

f(x)=(x+7)(x+7)(x+7)

= f(x)=(x^2+14x+49)(x+7)

= f(x)=(x^3+14x^2+49x+7x^2+98x+343)

= f(x)=x^3+21x^2+147x+343

Answer 2

Explanation:

F(x) = (x + 7)³

= 3C0 * x³ + 3C1 * x² * 7 + 3C2 * x * 7² + 3C3 * 7³

= x³ + 21x² + 147x + 343.