Q. Which of the following is equal to x(x2+9) ?Choose 1 answer:(A) x2+x+9(B) x2+9x(C) x3+9(D) x3+9x
Distribute x: Distribute x across the terms inside the parentheses.We apply the distributive property: a(b+c)=ab+ac.Here, a=x, b=x2, and c=9.So, x(x2+9)=x⋅x2+x⋅9.
Apply distributive property: Simplify the expression.x⋅x2 is x raised to the power of (1+2) because when we multiply powers with the same base, we add the exponents.x⋅x2=x(1+2)=x3.x⋅9 is simply 9x.So, x(x2+9)=x3+9x.