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Alenkasestr [34]
3 years ago
13

gn="absmiddle" class="latex-formula">

What are the steps to solve by factoring?
Mathematics
2 answers:
katen-ka-za [31]3 years ago
5 0

Answer:

x = -5 or  x = -4

Step-by-step explanation:

Given equation is :

x²+9x+20 = 0

We have to solve it by factoring.

Step 1.  Split the middle term of given equation so that the sum of two term should be 9 and their product be 20.

x²+5x+4x+20 = 0

Step 2.  Making groups ang taking common terms.

x(x+5)+4(x+5) = 0

Step 3.  Taking (x+5) as common,we get

(x+5)(x+4) = 0

Step 4. Applying Zero-Product Property to above equation,we get

x+5 = 0 or x+4 = 0

x = -5 or  x = -4 which is the answer.


Hoochie [10]3 years ago
3 0

Answer:

We have been given an equation x^2+9x+20=0

We will factorize it by  middle term splitting.

Step 1: x^2+5x+4x+20=0

Taking common factors out by clubing first two terms ad last two terms

Step 2: x(x+5)+4(x+5)=0

Step 3: (x+4)(x+5)=0

Equating both above factors to zero as:

Step 4: (x+4)=0\Rightarrow x=-4

   And (x+5)=0\Rightarrow x=-5.

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