edithgaona edithgaona

07-09-2019
Mathematics

contestada

The expression 21 - (2x + 3)2 + 4 (1 - 1) + z3 can be simplified into the form
Ax3 + Bx2 +Cr + D. Find the missing constants A, B, C, and D below.

Show work please.

Respuesta :

saniakhadye saniakhadye

07-09-2019

Answer:

A=z

B=-2

C=0

D=30

Step-by-step explanation:

First lets simply the equation

21 - (2x +3)2 + 4(1-1) + z^3

21 - (2x^2 + 9) + 4(0) + z ^3

21 - 2x^2 + 9 + z^3

- 2x^2 + z ^3 + 30

This means that:

A=z

B=-2

C=0

D=30

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