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What is the completely factored form of this polynomial?

What Is The Completely Factored Form Of This Polynomial class=

Sagot :

fissa4484

Answer:

B

Step-by-step explanation:

Take the common factor which is 5x^2 then write what is left in the parantheses.

Factor what is left inside and you'll get this answer.

View image fissa4484
itsty1992

Answer: B

Step-by-step explanation:

You can factor out a 5x² from each of the terms leaving you with:

5x²(x² + 4x - 21)

the term in the parenthesis can be factored down even more. You need to find two numbers whos sum is equal to 4 but when multiplied together equals -21. 7 and -3 fit this as 7 x -3 = -21 and 7 + (-3) = 4 so the factored form of the term in the parenthesis above would then be:

(x+7)(x-3)

So we can then substitute that in for the term in the parenthesis and we get the final answer of:

5x²(x+7)(x-3)

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