Study Set:
+15 Math Questions for SAT Prep - Group 2

if y=x^3 +2x+5 and z= x^2 + 7x+1, what is 2y+z in terms of x?

**2x^3 + x^2 + 11x +11**

Substituting the expressions equivalent to y and z into 2y +z results in the expression

2(x^3 +2x +5) +x^2+ 7x +1. The student must apply the distributive property to multiply

x^3 +2x +5 by 2

and then combine the like terms in the expression.

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