SOLUTION: In the following problem: 3(x+4)(x+7) To obtain a correct solution why must you multiply the binomials Instead of distributing 3 to the first ? If you do this, it comes up

Algebra.Com
Question 1188822: In the following problem:
3(x+4)(x+7)
To obtain a correct solution why must you multiply the binomials
Instead of distributing 3 to the first ? If you do this, it comes up incorrect.

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
In the following problem:
3(x+4)(x+7)
To obtain a correct solution why must you multiply the binomials
Instead of distributing 3 to the first ? If you do this, it comes up incorrect.
===================
Makes no difference what you do first.
3(x+4)(x+7) = (3x+12)*(x+7) = 3x^2 + 33x + 84
---
3(x+4)(x+7) = (x+4)*(3x+21) = 3x^2 + 33x + 84
---
3(x+4)(x+7) = 3(x^2+11X+28) = 3x^2 + 33x + 84
================
The only possible mistake is to multiply both binomials by 3.

RELATED QUESTIONS

Multiply each of the polynomial by x+1 with solution: a. x-1 b. x^2-x+1 c. x^3-x^2+x-1 (answered by KMST)
Hi there, I am confronted with the following question: "Solve the inequality and... (answered by longjonsilver)
multiply the two binomials together (x+3)... (answered by faceoff57)
In problems 16-20, describe the mistakes, if any. 16. (-x + 4)(x + 2) solution:... (answered by MathLover1,Edwin McCravy)
PLEASE NEED ANSWERS ASAP & SHOW ALL WORK THANKS 1) Multiply the following binomials.... (answered by t0hierry)
PLEASE NEED ANSWERS ASAP & SHOW ALL WORK THANKS 1) Multiply the following binomials.... (answered by addingup)
) Solve the following algebraically. Trial and error is not an appropriate method of... (answered by stanbon)
2. A student writes down the following as part of her response: a )... (answered by stanbon)
A). Show the steps that you would take to solve the following algebraically: 3/x-3... (answered by jim_thompson5910)